Wet Film
Thickness Gages
Measuring the film thickness of freshly applied coatings in the wet stage is very important.
On one hand, film thickness influences the quality of a product; on the other hand, applying
too much coating can be expensive. Depending on the application method, it is advisable
to measure wet film thickness. For measuring wet film thickness, BYK Gardner offers a comb or
“interchemical gage”.
Comb Type Gage
The comb is a ruler-shaped gage with two supports at each of its six sides, having tabs of
varying lengths.
·      Hexagonal shape made of corrosion resistant stainless steel
Procedure:
·       For measuring, push the comb gage perpendicularly into the film using the measuring range that corresponds to the expected film thickness
·       Remove the comb gage from the coating
·       The wet film thickness will fall between the clearance of the shortest tab that is wet and the clearance of the next shortest dry tab
·       The plastic comb gage may be used up to 60๐C (140๐F)
Ordering Information		Technical Specifications
Cat.No.	Description	Measuring Range	Outer Diameter
3501	Comb Gage 25-2000 µm, stainless steel	25-2000 µm	90 mm
3505	Comb Gage 1-80 mils, stainless steel	1-80 mils	90 mm
3507	Comb Gage 5-150 µm, stainless steel	5-150 Mm (0.2-6 mils)	58 mm
3509	Comb Gage Set, plastic, set of 10	25-2000 µm (1-80 mils)	90 mm
3510	Comb Gage Set, plastic, set of 100	25-2000 µm (1-80 mils)	90 mm