Read a caliper by determining the whole number and the first decimal place using the main scale and the second decimal reading from the Vernier scale. Read a micrometer by adding the reading from the thimble to the readi... More »

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A vernier caliper works by measuring lengths using two scales to achieve greater accuracy — a main scale and a vernier scale. The vernier scale can increase the accuracy of the main scale's smallest measured length by 10... More »

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The principle parts of a vernier caliper are outside jaws, inside jaws, main scale, vernier scale, depth probe, and lock screw. However, depending on the manufacturer, the depth probe might not be attached with some vern... More »

The sleeve of a micrometer caliper displays the current distance between the anvil and the spindle, the locking mechanisms of the caliper, in quarter micrometer increments. These are acid-etched lines and numbers in the ... More »

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Lock Haven University describes the micrometer caliper as a metric instrument with a pair of jaws, one of which is movable, and a main scale calibrated to one-half millimeter. It has a thimble section consisting of a rot... More »

Some scales, such as bathroom scales, can be calibrated by simply using known weights and adjusting the scale reading to match the amount of the known weight. Digital scales can be calibrated using a weight and the scale... More »

The term "um" is used as an abbreviation for the micrometer, although the proper abbreviation is the Greek symbol mu in place of the u. A micrometer is also referred to as a micron. More »