Measuring Range: 0 - 0.4 in (0 - 10 mm), Resolution: 0.0005 in (0.01 mm), Jaw Depth: 19.70 in (500 mm). The Checkline DMD-850 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.