بنزوى التقنية الكليةNizwa College of Technology

Mechanical Engineering Department

Measuring tools-

Presentation

About Measuring Instruments

• They should be made from spring They should be made from spring temper stainless or chrome-plated temper stainless or chrome-plated carbon steel.carbon steel.

• Should have very good finishing.Should have very good finishing.

• Graduations should be engine engraved.Graduations should be engine engraved.

• One end should be made as datum.One end should be made as datum.

• Used with care to prevent wear leading Used with care to prevent wear leading to inaccuracies.to inaccuracies.

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• They should be kept clean.They should be kept clean.

• Edges should be kept free from burrs.Edges should be kept free from burrs.

Issa al-tobiIssa al-tobi

STEEL-RULESTEEL-RULE

• The range of steel The range of steel rule is 150-rule is 150-1000mm (1m) and 1000mm (1m) and the reading the reading accuracy is 0.5mm.accuracy is 0.5mm.

The steel tapeThe steel tape

Vernier caliperVernier caliper

• The range of The range of vernier caliper is vernier caliper is 0/150 to 0/150 to 0/2000mm and the 0/2000mm and the reading accuracy is reading accuracy is 0.02mm. It is used 0.02mm. It is used for checking inside for checking inside and outside and outside diameters.diameters.

Parts of Vernier caliperParts of Vernier caliper

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Electronic digital Vernier Electronic digital Vernier caliper caliper

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Reading the metric vernier Reading the metric vernier

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The vernier height & depth The vernier height & depth gaugegauge

Micrometer Micrometer

• The range of The range of Micrometer is Micrometer is 0/25mm to 0/25mm to 1800mm and the 1800mm and the reading accuracy is reading accuracy is 0.01mm.0.01mm.

Micrometer Micrometer

Issa al-tobiIssa al-tobi

Digital micrometer Digital micrometer

Parts of Micrometer Parts of Micrometer

Frame

anvil

spindle

Thimble

Barrel

Ratchet

Reading the Micrometer Reading the Micrometer

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Issa al-tobiIssa al-tobi

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