الكلية التقنية بنزوى Nizwa College of Technology Mechanical Engineering Department Measuring tools- Presentation

About Measuring Instruments They should be made from spring temper stainless or chrome-plated carbon steel. They should be made from spring temper stainless or chrome-plated 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 to inaccuracies. Used with care to prevent wear leading to inaccuracies.

continued 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-tobi STEEL-RULE The range of steel rule is mm (1m) and the reading accuracy is 0.5mm. The range of steel rule is mm (1m) and the reading accuracy is 0.5mm.

The steel tape

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

Parts of Vernier caliper

Issa al-tobi Electronic digital Vernier caliper

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Reading the metric vernier

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The vernier height & depth gauge

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

Micrometer

Issa al-tobi Digital micrometer

Parts of Micrometer Frame anvil spindle Thimble Barrel Ratchet

Reading the Micrometer

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