A tree?s caliper measurement refers to the diameter of the tree?s trunk. Therefore, a 3-inch caliper tree has a trunk that is 3 inches across. A tree caliper is commonly used to calculate this measurement, especially for... More »

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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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 »

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 »

A caliper is used by placing the forks of the caliper around the object being measured and then reading the measurement revealed on the caliper's sliding scale. A caliper is accurate up to a 0.05 millimeter point, so any... More »

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"Mil thickness" refers to a U.S. engineering unit of measurement that is equal to 0.001 inch. Engineers and manufacturers use mil to rate the thickness of various items, including plastic, paper, sheet metal and aluminum... More »