also: マイクロメータ
noun
micrometer; micrometer caliper; micrometer gauge
A precision measuring instrument used in engineering and machining to measure small distances or thicknesses with high accuracy.
この部品の厚さをマイクロメーターで測ってください。
Please measure the thickness of this part with a micrometer.
マイクロメーターの目盛りを読む
Reading the scale of a micrometer takes practice.