Caltech Engineering Services Mumbai India offers Wet Film Wheels consists of three circles. The middle 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 thickness. Various measurement ranges are available from 0 to 100µm to 0 to 2000µm are available. It has continuous scale results in ±5% measurement accuracy and suitable for both flat and curved surfaces. Stainless steel giving a hard-wearing instrument which can be cleaned with solvents for reuse and used for important measurements.