Isoscope or Fischer scope
There is many companies that produce coating thickness gauges, for example there is Blue technology, Defelsko, Grainger, and Elcometer just to name a few.
Thickness's birth name is Trina Jones.
Joe Van Meter's birth name is Joseph Van Meter.
Stucco
Rick Van Meter's birth name is Richard Joseph Van Meter.
Victoria Van Meter's birth name is Victoria Louise Van Meter.
For copper or some copper alloys coins the coating is hydrated copper carbonate.
The protective coating that forms on sheet lead is called lead oxide.
stucco
Iron oxide or rust .
The black coating that forms on the surface of copper is called copper oxide.
A millimeter is 1/1000 of a meter.