A micrometre is one millionth of a metre and is often used to express the size of bacteria and cells.

The pollen grains measured only a few micrometres in diameter, making them invisible to the naked eye.

The technician adjusted the stage micrometrically to measure the sample's thickness precisely.

The micrometrical precision of the electron beam lithography system enabled the fabrication of patterns finer than a micrometer.

The micrometric calibration of the microscope ensured that measurements at the submicron scale were reliable.