Checkline DM-835 [DM-835-B] Analog Metric Dial Thickness Gauge, Range 0 - 75 mm, Jaw Depth 350 mm, Feeler B (10 mm) For Wood, Rubber, Soft Leather, Foil, Etc. Measuring Range: 0 - 75 mm, Resolution: 0.1 mm, Jaw Depth: 350 mm. The Checkline DM-835 Analog Metric Dial Thickness Gauge is used to determine the thickness of leather, textiles, cardboard, felt, rubber, sheet metal, foil, plywood, plastic, etc. Self closing thickness gauge with high accuracy and resolution.