About the Defelsko Wet Film Thickness Gauge
30-notch wet film thickness comb for measuring up to 2,000 μm or 80 mils
- Economical aluminum construction
- Convenient 5.7 x 8.25 cm (2.25″ x 3.25″) card format
- Can be discarded, kept as a record of film thickness, or cleaned and reused
- Select from microns or mils:
• 25–2,000 microns (WFG2000AL10PK)
• 1–80 mils
What is Wet Film Thickness and How is it Measured?
A wet film thickness comb or wet film thickness gauge helps determine how much material to apply wet to achieve a specified dry-film thickness provided that the percent of solids by volume is known. They measure all types of wet organic coatings, such as paint, varnish, and lacquer on flat or curved smooth surfaces.
Measuring wet film thickness during application identifies the need for immediate correction and adjustment by the applicator. Correction of the film after it has dried or chemically cured requires costly extra labor time, may lead to contamination of the film, and may introduce problems of adhesion and integrity of the coating system.
The comb is placed squarely and firmly onto the surface to be measured immediately after coating application and then removed. The wet-film thickness lies between the highest coated notch and the next uncoated notch. Notched wet-film comb measurements are neither accurate nor sensitive, but they are useful in determining approximate wet-film thickness of coatings on articles where size and shape prohibit the use of more precise methods. (ASTM D1212).
For measuring dry film thickness view the PosiTector 6000.
