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Minimum measurement is the smallest diameter that the micrometer can measure on the external portion of the workpiece. The measurement is made with the spindle and the anvil.
Maximum measurement is the largest diameter that the micrometer can measure on the external portion the workpiece. The measurement is made with the spindle and the anvil.
Graduation is the smallest unit of measurement divisions within a series of marks on the dial of the micrometer.
Digital Counter (Yes/No):
Micrometers with a digit counter offer an easy to read measurement when compared to reading the fine graduations on the vernier sleeve and thimble alone. They are available in .001 or .0001" increments.
Thimble type refers to the mechanism that advances the spindle on the micrometer. The mechanism can help the operator apply a consistent amount of torque to ensure deviations are minimal when taking a measurement.
Ratchet-Friction thimbles are easy-to-reach and provide audible and constant measuring pressure on the spindle while measuring. They are considered to be a combination of friction and ratchet stop thimbles.
Mechanical outside micrometers, also known as micrometer, mics or screw gages, are hand held instruments used for measuring the thickness or outside diameter of parts. Outside micrometers measuring ranges are from 0" to 20" engineered in 1" steps (lengths). They are graduated in 0 .001" with a 0.0001" vernier and available in metric sizes and graduations.