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กล้องระดับขนาดก าลังขยาย 24 เท่า ยี่ห้อ SOKKIA รุ่น B40 ผลิตภัณฑ์ประเทศญี่ปุน่ 1. เป็นกล้องชนิดอัตโนมัติพร้อมขาตั้ง 2. กล้องเล็งเป็นระบบเห็นภาพต้ังตรงตามธรรมชาติ 3. มีก าลังขยายไม่น้อยกว่า 24 เท่า 4. ขนาดเส้นผ่าศูนย์กลางของเลนส์ปากกล้องไม่น้อยกว่า 32 มิลลิเมตร 5. ขนาดความกว้างของภาพที่เห็นในระยะ 100 เมตร ไม่น้อยกว่า 2.5 เมตร หรือ 1 องศา 25 ลปิดา 6. ระยะมองเห็นภาพชัดใกล้สุด ไม่เกิน 0.3 เมตร 7. ค่าตัวคูณคงที่ 100 8. มีระบบอัตโนมัติโดยใช้ COMPENSATOR ที่มีช่วงการท างานของระบบอัตโนมัติ ไม่น้อยกว่า ± 15 ลิปดา 9. ความละเอียดในการท าระดับ ในระยะ 1 กม.ไม่เกิน ± 2 มิลลิเมตร 10. ความไวของระดับน้ าฟองกลมไม่เกินกว่า 10 ลิปดา ต่อ 2 มิลลิเมตร หรือไวกว่า 11. มีจานองศาอ่านมุมราบ 360 องศา มีขีดก ากับทุกๆ 1 องศา 12. ขนาดเส้นผ่าศูนย์กลางของจานองศาไม่น้อยกว่า 103 มิลลิเมตร 13. อ่านค่ามุมโดยตรงไม่เกิน 1 องศา 14. อ่านค่ามุมโดยประมาณไม่เกิน 6 ลิปดา 15. ต้องได้รับประกาศนียบัตร ISO 9001 อุปกรณ์ประกอบด้วย 1. มีกล่องบรรจุกล้องกันสะเทือนได้ 2. มีขาตั้งกล้องเลื่อนขึ้นลงได้ พร้อมลูกด่ิงและสาย 1 ชุด 3. มีฝาครอบเลนส์ 4. มีชุดเครื่องมือปรับแก้ประจ ากล้อง
หมายเหตุ การพิจารณาค่าความไว พิจารณาจากตัวเลขซึ่งมีค่ายิ่งน้อยย่ิงดี
1
2 3
4
Magnetic field is generated in a compensator.
Pendulum
Direction of motion
Conductor
Magnet
When a conductor moves…
…the motion generates electro-magnetic induction to produce eddy current in the conductor, and…
…the eddy current creates a force against the conductor’s motion.
■ Precise, Reliable Automatic Compensator
DE22 (B30/B40)DE16 (B20)
EL5 (B20) OM5/OM5F (B20)
© 2
010
TOPC
ON C
ORPO
RATI
ON. A
ll rig
hts
rese
rved
. SOK
KIA
is a
trad
emar
k of
SOK
KIA
TOPC
ON C
O., L
TD.
AUTOMATIC LEVELS
B20 B30 B40
■ OM5/OM5F Parallel Plate Micrometer (B20)To achieve the highest precision with the top-of-the-line B20 model, the optional parallel plate micrometer OM5 allows for staff readings in increments of 0.1mm (estimation to 0.01mm). Accuracy for 1km double run leveling can be increased from 0.7mm to 0.5mm. Imperial version OM5F has 0.001ft. graduations.
154
8.5
9.0
153
152
151
150
Parallel plate
Staff reading in cm
Example:Staff graduation 152 cmMicrometer reading + 0.87
152.87cm
World-Proven Precision and DurabilitySokkia B series automatic levels feature enhanced reliability under all environmental conditions. Tough and compact bodies are more tightly sealed against water, humidity and dust (IPx6). The B series levels provide quick setup, easy sighting, and superior durability against vibration and shock, ensuring the increased productivity over an extra-long period of time.
■ Rapid, Easy SetupA domed-head tripod makes setting up faster and easier even on inclined, uneven grounds. The B series levels also fit flat-head tripods. The circular level can be seen on a pentaprism or plane mirror located beside the telescope eyepiece.
■ Quick CollimationTwo knobs of endless horizontal motion drives can be operated with either hand for fast and easy aiming.
■ Horizontal Angle MeasurementHorizontal angles can be read in 1° or 1gon units. Freely rotatable circle allows any angle reading from zero. Right angles can be quickly set for layout and alignment tasks. The readout window is conveniently located on the instrument base – directly below the eyepiece.
■ Easy to AdjustReticle adjustment is made with one screw. Circular level vial is adjusted with two screws. Both adjustments are simple and fast with provided tools.
■ Superior TelescopeOptimally designed telescope provides exceptionally bright and sharp view that reduces operator’s eye strain. Ultra-short focus distance of 20cm (7.9in.) from end of telescope* makes it easiest to use in confined locations. Two-speed focus knob switches between coarse and fine for even faster operation (B20).*30cm (1ft.) from instrument center
A B
■ StadiaThe stadia lines on the reticle allow distance measurements. Simply multiply the staff length between the top and bottom stadia lines by 100.
B20
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
B30
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
B40
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
The B series levels incorporate the most precise and reliable compensator available in the market today. The technological superiority of the Sokkia automatic levels has been proven since the release of the best-selling B2 model in 1963. Four super-high-tensile suspension wires and magnetic damping system ensure accuracy and stability even when exposed to temperature changes, vibrations, or shock.
2010 06-1 P-73-1 GE
Product names mentioned in this brochure are trademarks of their respective holders.Product colors in this brochure may vary slightly from those of actual products owing to limitations of the printing process.Designs and specifications are subject to change without notice.
www.sokkia.co.jp75-1, HASUNUMA-CHO, ITABASHI-KU, TOKYO, 174-8580 JAPAN
B20 B30 B40 Specifications
■ Options■ DE16/DE22 Diagonal EyepieceA diagonal eyepiece facilitates work in tight spots with little space behind the instrument.
■ EL5 40x Removable Eyepiece (B20)Increases the standard 32x magnification to 40x.
■ Standard EquipmentInstrument, lens cap, plumb bob, vinyl cover, cleaning cloth, tool kit, operator’s manual, and carrying case.
SURVEYING INSTRUMENTS
Model B20 B30 B40
TelescopeLength 215mm (8.46in.)Magnification 32x 28x 24xObjective aperture 42mm
(1.65in.)36mm
(1.42in.)32mm
(1.26in.)
Resolving power 3" 3.5" 4"Field of View (at 100m/328ft.)
1°20'(2.3m / 7.5ft.)
1°25'(2.5m / 8.2ft.)
Minimum focus 0.2m (7.9in.) from end of telescope0.3m (1ft.) from instrument center
Image ErectReticle pattern Wedge Cross lineStadia constant 0Stadia ratio 100Focusing knob 2-speed 1-speedSighting aid Peep sight Gun sightLens hood Retractable -Accuracy (standard deviation for 1km double run leveling)Without micrometer 0.7mm
(0.03in.)1.5mm
(0.06in.)2.0mm
(0.08in.)
With micrometer 0.5mm (0.02in.) -
CompensatorType Pendulum compensator with magnetic
damping systemSetting accuracy 0.3" 0.5"Working range ±15'Circular levelSensitivity 10' / 2mmMirror Pentaprism Plane mirrorHorizontal circleDiameter 103mm (4.1in.)
Graduations 1°/ 1gonGeneralHorizontal motion drive Clampless, endless, double-sided knobsWater resistance IPX6 (IEC 60529:2001)Operating temperature -20 to +50°C (-4 to +122°F)Size Width 130mm (5.12in.)
Length 215mm (8.46in.)Height 140mm (5.51in.) 135mm (5.31in.)
Weight 1.85kg (4.1 lb.) 1.7kg (3.7 lb.)
1
2 3
4
Magnetic field is generated in a compensator.
Pendulum
Direction of motion
Conductor
Magnet
When a conductor moves…
…the motion generates electro-magnetic induction to produce eddy current in the conductor, and…
…the eddy current creates a force against the conductor’s motion.
■ Precise, Reliable Automatic Compensator
DE22 (B30/B40)DE16 (B20)
EL5 (B20) OM5/OM5F (B20)
© 2
010
TOPC
ON C
ORPO
RATI
ON. A
ll rig
hts
rese
rved
. SOK
KIA
is a
trad
emar
k of
SOK
KIA
TOPC
ON C
O., L
TD.
AUTOMATIC LEVELS
B20 B30 B40
■ OM5/OM5F Parallel Plate Micrometer (B20)To achieve the highest precision with the top-of-the-line B20 model, the optional parallel plate micrometer OM5 allows for staff readings in increments of 0.1mm (estimation to 0.01mm). Accuracy for 1km double run leveling can be increased from 0.7mm to 0.5mm. Imperial version OM5F has 0.001ft. graduations.
154
8.5
9.0
153
152
151
150
Parallel plate
Staff reading in cm
Example:Staff graduation 152 cmMicrometer reading + 0.87
152.87cm
World-Proven Precision and DurabilitySokkia B series automatic levels feature enhanced reliability under all environmental conditions. Tough and compact bodies are more tightly sealed against water, humidity and dust (IPx6). The B series levels provide quick setup, easy sighting, and superior durability against vibration and shock, ensuring the increased productivity over an extra-long period of time.
■ Rapid, Easy SetupA domed-head tripod makes setting up faster and easier even on inclined, uneven grounds. The B series levels also fit flat-head tripods. The circular level can be seen on a pentaprism or plane mirror located beside the telescope eyepiece.
■ Quick CollimationTwo knobs of endless horizontal motion drives can be operated with either hand for fast and easy aiming.
■ Horizontal Angle MeasurementHorizontal angles can be read in 1° or 1gon units. Freely rotatable circle allows any angle reading from zero. Right angles can be quickly set for layout and alignment tasks. The readout window is conveniently located on the instrument base – directly below the eyepiece.
■ Easy to AdjustReticle adjustment is made with one screw. Circular level vial is adjusted with two screws. Both adjustments are simple and fast with provided tools.
■ Superior TelescopeOptimally designed telescope provides exceptionally bright and sharp view that reduces operator’s eye strain. Ultra-short focus distance of 20cm (7.9in.) from end of telescope* makes it easiest to use in confined locations. Two-speed focus knob switches between coarse and fine for even faster operation (B20).*30cm (1ft.) from instrument center
A B
■ StadiaThe stadia lines on the reticle allow distance measurements. Simply multiply the staff length between the top and bottom stadia lines by 100.
B20
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
B30
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
B40
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
The B series levels incorporate the most precise and reliable compensator available in the market today. The technological superiority of the Sokkia automatic levels has been proven since the release of the best-selling B2 model in 1963. Four super-high-tensile suspension wires and magnetic damping system ensure accuracy and stability even when exposed to temperature changes, vibrations, or shock.
2010 06-1 P-73-1 GE
Product names mentioned in this brochure are trademarks of their respective holders.Product colors in this brochure may vary slightly from those of actual products owing to limitations of the printing process.Designs and specifications are subject to change without notice.
www.sokkia.co.jp75-1, HASUNUMA-CHO, ITABASHI-KU, TOKYO, 174-8580 JAPAN
B20 B30 B40 Specifications
■ Options■ DE16/DE22 Diagonal EyepieceA diagonal eyepiece facilitates work in tight spots with little space behind the instrument.
■ EL5 40x Removable Eyepiece (B20)Increases the standard 32x magnification to 40x.
■ Standard EquipmentInstrument, lens cap, plumb bob, vinyl cover, cleaning cloth, tool kit, operator’s manual, and carrying case.
SURVEYING INSTRUMENTS
Model B20 B30 B40
TelescopeLength 215mm (8.46in.)Magnification 32x 28x 24xObjective aperture 42mm
(1.65in.)36mm
(1.42in.)32mm
(1.26in.)
Resolving power 3" 3.5" 4"Field of View (at 100m/328ft.)
1°20'(2.3m / 7.5ft.)
1°25'(2.5m / 8.2ft.)
Minimum focus 0.2m (7.9in.) from end of telescope0.3m (1ft.) from instrument center
Image ErectReticle pattern Wedge Cross lineStadia constant 0Stadia ratio 100Focusing knob 2-speed 1-speedSighting aid Peep sight Gun sightLens hood Retractable -Accuracy (standard deviation for 1km double run leveling)Without micrometer 0.7mm
(0.03in.)1.5mm
(0.06in.)2.0mm
(0.08in.)
With micrometer 0.5mm (0.02in.) -
CompensatorType Pendulum compensator with magnetic
damping systemSetting accuracy 0.3" 0.5"Working range ±15'Circular levelSensitivity 10' / 2mmMirror Pentaprism Plane mirrorHorizontal circleDiameter 103mm (4.1in.)
Graduations 1°/ 1gonGeneralHorizontal motion drive Clampless, endless, double-sided knobsWater resistance IPX6 (IEC 60529:2001)Operating temperature -20 to +50°C (-4 to +122°F)Size Width 130mm (5.12in.)
Length 215mm (8.46in.)Height 140mm (5.51in.) 135mm (5.31in.)
Weight 1.85kg (4.1 lb.) 1.7kg (3.7 lb.)
1
2 3
4
Magnetic field is generated in a compensator.
Pendulum
Direction of motion
Conductor
Magnet
When a conductor moves…
…the motion generates electro-magnetic induction to produce eddy current in the conductor, and…
…the eddy current creates a force against the conductor’s motion.
■ Precise, Reliable Automatic Compensator
DE22 (B30/B40)DE16 (B20)
EL5 (B20) OM5/OM5F (B20)
© 2
010
TOPC
ON C
ORPO
RATI
ON. A
ll rig
hts
rese
rved
. SOK
KIA
is a
trad
emar
k of
SOK
KIA
TOPC
ON C
O., L
TD.
AUTOMATIC LEVELS
B20 B30 B40
■ OM5/OM5F Parallel Plate Micrometer (B20)To achieve the highest precision with the top-of-the-line B20 model, the optional parallel plate micrometer OM5 allows for staff readings in increments of 0.1mm (estimation to 0.01mm). Accuracy for 1km double run leveling can be increased from 0.7mm to 0.5mm. Imperial version OM5F has 0.001ft. graduations.
154
8.5
9.0
153
152
151
150
Parallel plate
Staff reading in cm
Example:Staff graduation 152 cmMicrometer reading + 0.87
152.87cm
World-Proven Precision and DurabilitySokkia B series automatic levels feature enhanced reliability under all environmental conditions. Tough and compact bodies are more tightly sealed against water, humidity and dust (IPx6). The B series levels provide quick setup, easy sighting, and superior durability against vibration and shock, ensuring the increased productivity over an extra-long period of time.
■ Rapid, Easy SetupA domed-head tripod makes setting up faster and easier even on inclined, uneven grounds. The B series levels also fit flat-head tripods. The circular level can be seen on a pentaprism or plane mirror located beside the telescope eyepiece.
■ Quick CollimationTwo knobs of endless horizontal motion drives can be operated with either hand for fast and easy aiming.
■ Horizontal Angle MeasurementHorizontal angles can be read in 1° or 1gon units. Freely rotatable circle allows any angle reading from zero. Right angles can be quickly set for layout and alignment tasks. The readout window is conveniently located on the instrument base – directly below the eyepiece.
■ Easy to AdjustReticle adjustment is made with one screw. Circular level vial is adjusted with two screws. Both adjustments are simple and fast with provided tools.
■ Superior TelescopeOptimally designed telescope provides exceptionally bright and sharp view that reduces operator’s eye strain. Ultra-short focus distance of 20cm (7.9in.) from end of telescope* makes it easiest to use in confined locations. Two-speed focus knob switches between coarse and fine for even faster operation (B20).*30cm (1ft.) from instrument center
A B
■ StadiaThe stadia lines on the reticle allow distance measurements. Simply multiply the staff length between the top and bottom stadia lines by 100.
B20
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
B30
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
B40
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
The B series levels incorporate the most precise and reliable compensator available in the market today. The technological superiority of the Sokkia automatic levels has been proven since the release of the best-selling B2 model in 1963. Four super-high-tensile suspension wires and magnetic damping system ensure accuracy and stability even when exposed to temperature changes, vibrations, or shock.
2010 06-1 P-73-1 GE
Product names mentioned in this brochure are trademarks of their respective holders.Product colors in this brochure may vary slightly from those of actual products owing to limitations of the printing process.Designs and specifications are subject to change without notice.
www.sokkia.co.jp75-1, HASUNUMA-CHO, ITABASHI-KU, TOKYO, 174-8580 JAPAN
B20 B30 B40 Specifications
■ Options■ DE16/DE22 Diagonal EyepieceA diagonal eyepiece facilitates work in tight spots with little space behind the instrument.
■ EL5 40x Removable Eyepiece (B20)Increases the standard 32x magnification to 40x.
■ Standard EquipmentInstrument, lens cap, plumb bob, vinyl cover, cleaning cloth, tool kit, operator’s manual, and carrying case.
SURVEYING INSTRUMENTS
Model B20 B30 B40
TelescopeLength 215mm (8.46in.)Magnification 32x 28x 24xObjective aperture 42mm
(1.65in.)36mm
(1.42in.)32mm
(1.26in.)
Resolving power 3" 3.5" 4"Field of View (at 100m/328ft.)
1°20'(2.3m / 7.5ft.)
1°25'(2.5m / 8.2ft.)
Minimum focus 0.2m (7.9in.) from end of telescope0.3m (1ft.) from instrument center
Image ErectReticle pattern Wedge Cross lineStadia constant 0Stadia ratio 100Focusing knob 2-speed 1-speedSighting aid Peep sight Gun sightLens hood Retractable -Accuracy (standard deviation for 1km double run leveling)Without micrometer 0.7mm
(0.03in.)1.5mm
(0.06in.)2.0mm
(0.08in.)
With micrometer 0.5mm (0.02in.) -
CompensatorType Pendulum compensator with magnetic
damping systemSetting accuracy 0.3" 0.5"Working range ±15'Circular levelSensitivity 10' / 2mmMirror Pentaprism Plane mirrorHorizontal circleDiameter 103mm (4.1in.)
Graduations 1°/ 1gonGeneralHorizontal motion drive Clampless, endless, double-sided knobsWater resistance IPX6 (IEC 60529:2001)Operating temperature -20 to +50°C (-4 to +122°F)Size Width 130mm (5.12in.)
Length 215mm (8.46in.)Height 140mm (5.51in.) 135mm (5.31in.)
Weight 1.85kg (4.1 lb.) 1.7kg (3.7 lb.)
1
2 3
4
Magnetic field is generated in a compensator.
Pendulum
Direction of motion
Conductor
Magnet
When a conductor moves…
…the motion generates electro-magnetic induction to produce eddy current in the conductor, and…
…the eddy current creates a force against the conductor’s motion.
■ Precise, Reliable Automatic Compensator
DE22 (B30/B40)DE16 (B20)
EL5 (B20) OM5/OM5F (B20)
© 2
010
TOPC
ON C
ORPO
RATI
ON. A
ll rig
hts
rese
rved
. SOK
KIA
is a
trad
emar
k of
SOK
KIA
TOPC
ON C
O., L
TD.
AUTOMATIC LEVELS
B20 B30 B40
■ OM5/OM5F Parallel Plate Micrometer (B20)To achieve the highest precision with the top-of-the-line B20 model, the optional parallel plate micrometer OM5 allows for staff readings in increments of 0.1mm (estimation to 0.01mm). Accuracy for 1km double run leveling can be increased from 0.7mm to 0.5mm. Imperial version OM5F has 0.001ft. graduations.
154
8.5
9.0
153
152
151
150
Parallel plate
Staff reading in cm
Example:Staff graduation 152 cmMicrometer reading + 0.87
152.87cm
World-Proven Precision and DurabilitySokkia B series automatic levels feature enhanced reliability under all environmental conditions. Tough and compact bodies are more tightly sealed against water, humidity and dust (IPx6). The B series levels provide quick setup, easy sighting, and superior durability against vibration and shock, ensuring the increased productivity over an extra-long period of time.
■ Rapid, Easy SetupA domed-head tripod makes setting up faster and easier even on inclined, uneven grounds. The B series levels also fit flat-head tripods. The circular level can be seen on a pentaprism or plane mirror located beside the telescope eyepiece.
■ Quick CollimationTwo knobs of endless horizontal motion drives can be operated with either hand for fast and easy aiming.
■ Horizontal Angle MeasurementHorizontal angles can be read in 1° or 1gon units. Freely rotatable circle allows any angle reading from zero. Right angles can be quickly set for layout and alignment tasks. The readout window is conveniently located on the instrument base – directly below the eyepiece.
■ Easy to AdjustReticle adjustment is made with one screw. Circular level vial is adjusted with two screws. Both adjustments are simple and fast with provided tools.
■ Superior TelescopeOptimally designed telescope provides exceptionally bright and sharp view that reduces operator’s eye strain. Ultra-short focus distance of 20cm (7.9in.) from end of telescope* makes it easiest to use in confined locations. Two-speed focus knob switches between coarse and fine for even faster operation (B20).*30cm (1ft.) from instrument center
A B
■ StadiaThe stadia lines on the reticle allow distance measurements. Simply multiply the staff length between the top and bottom stadia lines by 100.
B20
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
B30
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
B40
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
The B series levels incorporate the most precise and reliable compensator available in the market today. The technological superiority of the Sokkia automatic levels has been proven since the release of the best-selling B2 model in 1963. Four super-high-tensile suspension wires and magnetic damping system ensure accuracy and stability even when exposed to temperature changes, vibrations, or shock.
2010 06-1 P-73-1 GE
Product names mentioned in this brochure are trademarks of their respective holders.Product colors in this brochure may vary slightly from those of actual products owing to limitations of the printing process.Designs and specifications are subject to change without notice.
www.sokkia.co.jp75-1, HASUNUMA-CHO, ITABASHI-KU, TOKYO, 174-8580 JAPAN
B20 B30 B40 Specifications
■ Options■ DE16/DE22 Diagonal EyepieceA diagonal eyepiece facilitates work in tight spots with little space behind the instrument.
■ EL5 40x Removable Eyepiece (B20)Increases the standard 32x magnification to 40x.
■ Standard EquipmentInstrument, lens cap, plumb bob, vinyl cover, cleaning cloth, tool kit, operator’s manual, and carrying case.
SURVEYING INSTRUMENTS
Model B20 B30 B40
TelescopeLength 215mm (8.46in.)Magnification 32x 28x 24xObjective aperture 42mm
(1.65in.)36mm
(1.42in.)32mm
(1.26in.)
Resolving power 3" 3.5" 4"Field of View (at 100m/328ft.)
1°20'(2.3m / 7.5ft.)
1°25'(2.5m / 8.2ft.)
Minimum focus 0.2m (7.9in.) from end of telescope0.3m (1ft.) from instrument center
Image ErectReticle pattern Wedge Cross lineStadia constant 0Stadia ratio 100Focusing knob 2-speed 1-speedSighting aid Peep sight Gun sightLens hood Retractable -Accuracy (standard deviation for 1km double run leveling)Without micrometer 0.7mm
(0.03in.)1.5mm
(0.06in.)2.0mm
(0.08in.)
With micrometer 0.5mm (0.02in.) -
CompensatorType Pendulum compensator with magnetic
damping systemSetting accuracy 0.3" 0.5"Working range ±15'Circular levelSensitivity 10' / 2mmMirror Pentaprism Plane mirrorHorizontal circleDiameter 103mm (4.1in.)
Graduations 1°/ 1gonGeneralHorizontal motion drive Clampless, endless, double-sided knobsWater resistance IPX6 (IEC 60529:2001)Operating temperature -20 to +50°C (-4 to +122°F)Size Width 130mm (5.12in.)
Length 215mm (8.46in.)Height 140mm (5.51in.) 135mm (5.31in.)
Weight 1.85kg (4.1 lb.) 1.7kg (3.7 lb.)
1
2 3
4
Magnetic field is generated in a compensator.
Pendulum
Direction of motion
Conductor
Magnet
When a conductor moves…
…the motion generates electro-magnetic induction to produce eddy current in the conductor, and…
…the eddy current creates a force against the conductor’s motion.
■ Precise, Reliable Automatic Compensator
DE22 (B30/B40)DE16 (B20)
EL5 (B20) OM5/OM5F (B20)
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AUTOMATIC LEVELS
B20 B30 B40
■ OM5/OM5F Parallel Plate Micrometer (B20)To achieve the highest precision with the top-of-the-line B20 model, the optional parallel plate micrometer OM5 allows for staff readings in increments of 0.1mm (estimation to 0.01mm). Accuracy for 1km double run leveling can be increased from 0.7mm to 0.5mm. Imperial version OM5F has 0.001ft. graduations.
154
8.5
9.0
153
152
151
150
Parallel plate
Staff reading in cm
Example:Staff graduation 152 cmMicrometer reading + 0.87
152.87cm
World-Proven Precision and DurabilitySokkia B series automatic levels feature enhanced reliability under all environmental conditions. Tough and compact bodies are more tightly sealed against water, humidity and dust (IPx6). The B series levels provide quick setup, easy sighting, and superior durability against vibration and shock, ensuring the increased productivity over an extra-long period of time.
■ Rapid, Easy SetupA domed-head tripod makes setting up faster and easier even on inclined, uneven grounds. The B series levels also fit flat-head tripods. The circular level can be seen on a pentaprism or plane mirror located beside the telescope eyepiece.
■ Quick CollimationTwo knobs of endless horizontal motion drives can be operated with either hand for fast and easy aiming.
■ Horizontal Angle MeasurementHorizontal angles can be read in 1° or 1gon units. Freely rotatable circle allows any angle reading from zero. Right angles can be quickly set for layout and alignment tasks. The readout window is conveniently located on the instrument base – directly below the eyepiece.
■ Easy to AdjustReticle adjustment is made with one screw. Circular level vial is adjusted with two screws. Both adjustments are simple and fast with provided tools.
■ Superior TelescopeOptimally designed telescope provides exceptionally bright and sharp view that reduces operator’s eye strain. Ultra-short focus distance of 20cm (7.9in.) from end of telescope* makes it easiest to use in confined locations. Two-speed focus knob switches between coarse and fine for even faster operation (B20).*30cm (1ft.) from instrument center
A B
■ StadiaThe stadia lines on the reticle allow distance measurements. Simply multiply the staff length between the top and bottom stadia lines by 100.
B20
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
B30
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
B40
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
The B series levels incorporate the most precise and reliable compensator available in the market today. The technological superiority of the Sokkia automatic levels has been proven since the release of the best-selling B2 model in 1963. Four super-high-tensile suspension wires and magnetic damping system ensure accuracy and stability even when exposed to temperature changes, vibrations, or shock.
2010 06-1 P-73-1 GE
Product names mentioned in this brochure are trademarks of their respective holders.Product colors in this brochure may vary slightly from those of actual products owing to limitations of the printing process.Designs and specifications are subject to change without notice.
www.sokkia.co.jp75-1, HASUNUMA-CHO, ITABASHI-KU, TOKYO, 174-8580 JAPAN
B20 B30 B40 Specifications
■ Options■ DE16/DE22 Diagonal EyepieceA diagonal eyepiece facilitates work in tight spots with little space behind the instrument.
■ EL5 40x Removable Eyepiece (B20)Increases the standard 32x magnification to 40x.
■ Standard EquipmentInstrument, lens cap, plumb bob, vinyl cover, cleaning cloth, tool kit, operator’s manual, and carrying case.
SURVEYING INSTRUMENTS
Model B20 B30 B40
TelescopeLength 215mm (8.46in.)Magnification 32x 28x 24xObjective aperture 42mm
(1.65in.)36mm
(1.42in.)32mm
(1.26in.)
Resolving power 3" 3.5" 4"Field of View (at 100m/328ft.)
1°20'(2.3m / 7.5ft.)
1°25'(2.5m / 8.2ft.)
Minimum focus 0.2m (7.9in.) from end of telescope0.3m (1ft.) from instrument center
Image ErectReticle pattern Wedge Cross lineStadia constant 0Stadia ratio 100Focusing knob 2-speed 1-speedSighting aid Peep sight Gun sightLens hood Retractable -Accuracy (standard deviation for 1km double run leveling)Without micrometer 0.7mm
(0.03in.)1.5mm
(0.06in.)2.0mm
(0.08in.)
With micrometer 0.5mm (0.02in.) -
CompensatorType Pendulum compensator with magnetic
damping systemSetting accuracy 0.3" 0.5"Working range ±15'Circular levelSensitivity 10' / 2mmMirror Pentaprism Plane mirrorHorizontal circleDiameter 103mm (4.1in.)
Graduations 1°/ 1gonGeneralHorizontal motion drive Clampless, endless, double-sided knobsWater resistance IPX6 (IEC 60529:2001)Operating temperature -20 to +50°C (-4 to +122°F)Size Width 130mm (5.12in.)
Length 215mm (8.46in.)Height 140mm (5.51in.) 135mm (5.31in.)
Weight 1.85kg (4.1 lb.) 1.7kg (3.7 lb.)
1
2 3
4
Magnetic field is generated in a compensator.
Pendulum
Direction of motion
Conductor
Magnet
When a conductor moves…
…the motion generates electro-magnetic induction to produce eddy current in the conductor, and…
…the eddy current creates a force against the conductor’s motion.
■ Precise, Reliable Automatic Compensator
DE22 (B30/B40)DE16 (B20)
EL5 (B20) OM5/OM5F (B20)
© 2
010
TOPC
ON C
ORPO
RATI
ON. A
ll rig
hts
rese
rved
. SOK
KIA
is a
trad
emar
k of
SOK
KIA
TOPC
ON C
O., L
TD.
AUTOMATIC LEVELS
B20 B30 B40
■ OM5/OM5F Parallel Plate Micrometer (B20)To achieve the highest precision with the top-of-the-line B20 model, the optional parallel plate micrometer OM5 allows for staff readings in increments of 0.1mm (estimation to 0.01mm). Accuracy for 1km double run leveling can be increased from 0.7mm to 0.5mm. Imperial version OM5F has 0.001ft. graduations.
154
8.5
9.0
153
152
151
150
Parallel plate
Staff reading in cm
Example:Staff graduation 152 cmMicrometer reading + 0.87
152.87cm
World-Proven Precision and DurabilitySokkia B series automatic levels feature enhanced reliability under all environmental conditions. Tough and compact bodies are more tightly sealed against water, humidity and dust (IPx6). The B series levels provide quick setup, easy sighting, and superior durability against vibration and shock, ensuring the increased productivity over an extra-long period of time.
■ Rapid, Easy SetupA domed-head tripod makes setting up faster and easier even on inclined, uneven grounds. The B series levels also fit flat-head tripods. The circular level can be seen on a pentaprism or plane mirror located beside the telescope eyepiece.
■ Quick CollimationTwo knobs of endless horizontal motion drives can be operated with either hand for fast and easy aiming.
■ Horizontal Angle MeasurementHorizontal angles can be read in 1° or 1gon units. Freely rotatable circle allows any angle reading from zero. Right angles can be quickly set for layout and alignment tasks. The readout window is conveniently located on the instrument base – directly below the eyepiece.
■ Easy to AdjustReticle adjustment is made with one screw. Circular level vial is adjusted with two screws. Both adjustments are simple and fast with provided tools.
■ Superior TelescopeOptimally designed telescope provides exceptionally bright and sharp view that reduces operator’s eye strain. Ultra-short focus distance of 20cm (7.9in.) from end of telescope* makes it easiest to use in confined locations. Two-speed focus knob switches between coarse and fine for even faster operation (B20).*30cm (1ft.) from instrument center
A B
■ StadiaThe stadia lines on the reticle allow distance measurements. Simply multiply the staff length between the top and bottom stadia lines by 100.
B20
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
B30
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
B40
Telescope
B20
32xAccuracy
B20
0.7mmTelescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
Telescope
B20
32xAccuracy
B20
0.7mm
Telescope
B30
28xAccuracy
B30
1.5mmTelescope
B40
24xAccuracy
B40
2.0mm
The B series levels incorporate the most precise and reliable compensator available in the market today. The technological superiority of the Sokkia automatic levels has been proven since the release of the best-selling B2 model in 1963. Four super-high-tensile suspension wires and magnetic damping system ensure accuracy and stability even when exposed to temperature changes, vibrations, or shock.
2010 06-1 P-73-1 GE
Product names mentioned in this brochure are trademarks of their respective holders.Product colors in this brochure may vary slightly from those of actual products owing to limitations of the printing process.Designs and specifications are subject to change without notice.
www.sokkia.co.jp75-1, HASUNUMA-CHO, ITABASHI-KU, TOKYO, 174-8580 JAPAN
B20 B30 B40 Specifications
■ Options■ DE16/DE22 Diagonal EyepieceA diagonal eyepiece facilitates work in tight spots with little space behind the instrument.
■ EL5 40x Removable Eyepiece (B20)Increases the standard 32x magnification to 40x.
■ Standard EquipmentInstrument, lens cap, plumb bob, vinyl cover, cleaning cloth, tool kit, operator’s manual, and carrying case.
SURVEYING INSTRUMENTS
Model B20 B30 B40
TelescopeLength 215mm (8.46in.)Magnification 32x 28x 24xObjective aperture 42mm
(1.65in.)36mm
(1.42in.)32mm
(1.26in.)
Resolving power 3" 3.5" 4"Field of View (at 100m/328ft.)
1°20'(2.3m / 7.5ft.)
1°25'(2.5m / 8.2ft.)
Minimum focus 0.2m (7.9in.) from end of telescope0.3m (1ft.) from instrument center
Image ErectReticle pattern Wedge Cross lineStadia constant 0Stadia ratio 100Focusing knob 2-speed 1-speedSighting aid Peep sight Gun sightLens hood Retractable -Accuracy (standard deviation for 1km double run leveling)Without micrometer 0.7mm
(0.03in.)1.5mm
(0.06in.)2.0mm
(0.08in.)
With micrometer 0.5mm (0.02in.) -
CompensatorType Pendulum compensator with magnetic
damping systemSetting accuracy 0.3" 0.5"Working range ±15'Circular levelSensitivity 10' / 2mmMirror Pentaprism Plane mirrorHorizontal circleDiameter 103mm (4.1in.)
Graduations 1°/ 1gonGeneralHorizontal motion drive Clampless, endless, double-sided knobsWater resistance IPX6 (IEC 60529:2001)Operating temperature -20 to +50°C (-4 to +122°F)Size Width 130mm (5.12in.)
Length 215mm (8.46in.)Height 140mm (5.51in.) 135mm (5.31in.)
Weight 1.85kg (4.1 lb.) 1.7kg (3.7 lb.)
