micromillimetre

Example:The thickness of the same chip was measured as 5 micrometres.

Definition:A unit of length in the metric system equal to one-millionth of a meter (1 μm = 0.000001 m).

Example:To achieve the necessary precision,scientists use a micrometer to measure lengths at the micrometre level.

Definition:An instrument for measuring small distances or thicknesses directly, equal to one-millionth of a meter.