A wet film comb that allows the wet film thickness of paint to be checked during the painting process. Using the gauge, you can ensure you are applying the paint at the required thickness to achieve the full durability of the paint.
To use the gauge, simply insert the gauge into the wet paint at a right angle to the surface. When lifted out, the last coated tooth is the wet film thickness of the coating. If all teeth on the side used are coated, check again with the next side anti clockwise.
This gauge is useful when applying intumescent paints, where a specific wet film thickness is required for the coating to function as intended. It is also commonly used when applying two pack paints to ensure the correct thickness of the primer and topcoat.