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To measure dimensions such as the length, height, depth or diameter of a component, micrometers are used. There are different types of micrometer for different 1_______.
To measure the external diameter of a small component such as a small shaft, a micrometer caliper is used; to measure internal 2_______, a micrometer cylinder is used. Depth micrometers are used to measure the 3_______ of a component. The measurements are shown on different 4_______ of scale depending on the type of micrometer.