Recently my boss found a non contact surface meter that is accurate to 35 microns (it has the symbol that looks like a backward y and m (ym)). We use inches for the whole company and the smallest surface finish we have is a 12 Ra. Our surface meters (mahr federal pocket surf meter) are set to microinch.
Is this non contact device accurate enough to check my surface finish?
I need help understanding before he buys it and makes me make it work.