Press-O-Film Replica Tape
Testex Press-O-Film replica tape is available in a variety of thicknesses to facilitate profile measurement in differing ranges. Testex replica tape can be used with a gage to measure the surface roughness ("profile") of blast-cleaned steel in the roughness range 0.8 to 4.5 mils (or 20 to 115 micrometers). Because inspectors, as a rule, have a target profile in mind. it is always best to start measurements with the grade of tape that has the target profile closest to the center of it's range. Range measurements are for mil / um when used with gage.