Measuring Range: 0 - 0.4 in (0 - 10 mm), Resolution: 0.0005 in (0.01 mm), Jaw Depth: 7.87 in (200 mm). The Checkline DMD-820 Digital 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.