Fowler External Caliper Type Gage Features Include... 0.4"-1.20" / 10-30mm Measuring Range 0.0002" / 0.005mm Resolution + 0.0008" / + 0.02mm Accuracy Robust Housing Large LCD Display Dimensions include... Range L Dim. S Dim. H Dim. Tip Radius 0.4"-1.2" 80mm 6.5mm 25mm 0.75mm