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A Boley gauge, also known as a caliper gauge, is read by observing the position of the sliding jaw relative to the fixed jaw. To take a measurement, place the gauge around the object to be measured and ensure it fits snugly. Then, read the measurement on the scale where the sliding jaw aligns with the fixed jaw. For more precise readings, use the vernier scale if present, which allows you to determine fractions of a unit.

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2mo ago

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