At my last job, we measured product thickness in mm; area in square feet; throughput in meters per minute; coating thickness in nm, angstroms, or fraction multi

At my last job, we measured product thickness in mm; area in square feet; throughput in meters per minute; coating thickness in nm, angstroms, or fraction multiples of 550nm; weight in tons (imperial) but some input materials in grams and kilograms; and pressure in hPa, atmospheres, psi, and torr (occasionally in the same sentence and graphed logarithmically in some cases). Basically, we use units like any tool. Use whatever tick marks line up to the problem conveniently. You can always covert later if you need to.