Wet Film Thickness wheel

A wheel-shaped thickness gauge made of stainless steel to check thickness of fresh and wet film

The wet film thickness gauge is a wheel-shaped thickness gauge made of stainless steel to check thickness of fresh and wet film.

The central circle is of smaller diameter and is eccentric of the two outer circles. By rolling the gauge through a wet coating, the centre disc eventually touches the film. This point on the scale indicates the thickness.
If the volume to solids ratio of the coating is known, then the wet film thickness can be used to predict the dry film

Property: Gloss and coatings