A slightly more esoteric Imperial unit is "mils", for thousandths of an inch. 1 mil = 0.001 inch. Which means 1 mil = 25.4 micrometers if we also want to use a

A slightly more esoteric Imperial unit is "mils", for thousandths of an inch. 1 mil = 0.001 inch. Which means 1 mil = 25.4 micrometers if we also want to use a non-traditional meter measurement.