Checkline JD-100 [JD-100-A] Digital Thickness Gauge, Range 0 - 10 mm / 0.4 inch, Depth Of Jaw 100 mm / 4 inch, Feeler A For Rubber, Felt, Soft Materials, Non Wovens. Measuring range 0 - 10 mm / 0 - 0.4 Inch, Resolution 0.01 mm / 0.001 Inch. Thickness gauge to determine the thickness of leather, textiles, cardboard, felt, rubber, sheet metal, foil, plywood, plastic, etc.