The Elcometer Hexagonal Wet Film Combs are designed for wet film thickness measurements and come in a range of thickness scales.
Elcometer 112 & 3236 Hexagonal Wet Film Combs (Stainless Steel)
These hexagonal precision formed stainless steel wet film combs are long lasting, reusable and supplied in a range of thicknesses measuring up to 3,000μm (120mils).
These six sided combs vary in size, giving either 24 or 36 measurement steps, depending upon the comb, thus providing increased accuracy.