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Micrometer
01
a precise handheld measuring tool typically used to measure very small distances between 0 and 25 mm
02
a unit of length in the metric system equal to one millionth of a meter
Example
The scientists used a micrometer to measure the diameter of individual cells under the microscope.
The machinist carefully measured the width of each engine part with a digital micrometer to ensure it met specifications.
The conductive nanotubes were only a few micrometers in diameter and needed to be viewed under an electron microscope.
