FeaturesUseful for measuring inside diameters and clearance dimensions.The thickness of the gauge itself can cause errors when measuring round holes. The inside diameter correction table is provided on the back of the gauge to assist accurate measurement.SpecificationsBody size 148 x 17 x 1.2mmMeasuring range 1 - 15mmWeight 11gThickness 1.2mmAccuracy: ±0.05mmMaterial: Stainless steelHardness: Hv400 or higher