The width is measured in 'Microns' (micrometres) which equals one thousandth of a millimetre (mm).
It's difficult for non-English speakers, or poor English speakers, compose in perfect English. https://www.benzinga.com/pressreleases/23/09/34698605/contractors-state-license-center-is-offering-convenient-contractors-license-classes-over-zoom-in-lo