Sheet Metal Thickness Gauge, Dimension Type Inch/US Sheet Metal, Gauge Standard US Sheet Metal, Maximum Measurement - Inch 0.312 in, Maximum Measurement - Gauge #0, Minimum Measurement - Inch 0.007 in, Minimum Measurement - Gauge #36, Thickness 0.105 in, Material Steel, Outside Diameter 3 5/16 in, Range - Inch 0.007 in to 0.312 in, Range - Gauge #36 to #0