Micrometer vs. Nanometer
Difference Between Micrometer and Nanometer
An SI/MKS unit of measure, the length of one millionth of a meter. Symbols: µm, um, rm.
a metric unit of length equal to one billionth of a meter
A device used to measure distance very precisely but within a limited range, especially depth, thickness, and diameter.
caliper for measuring small distances
a metric unit of length equal to one millionth of a meter