Replica Tape Press-O-Film

Replica Tape provides a simple way to obtain an impression of a surface for analysis. It consists of a layer of crushable plastic micro foam affixed to a 50.8 µm (2 mil) incompressible polyester film.

When compressed against a roughened surface, the foam collapses and acquires an impression, or reverse replica, of the surface. It is available in a number of grades to accommodate measurements in different profile ranges.

Placing the compressed tape (replica) into the PosiTector RTR gives a measure of the average maximum peak-to-valley height of the surface roughness profile.

The gage automatically subtracts the thickness of the polyester substrate from all measurements.

The most commonly used grade, or thickness, of replica tape has the designation "X-Coarse".
This grade covers, approximately, the range of profile heights extending from 38 um to 115 um. Because some applications require measurements to lower profiles, a second grade, "Coarse" can be used to extend the range downward to 20 um. Coarse grade covers the range of 20um to 63um.