Dial Test Indicator Stylus Case Type Pouch Compatible with Brand and Series INTERAPID Compatible with Manufacturer Model No 312 series Contact Point Material Carbide Contact Point Shape Ball Contact Point Thread Size M1.6 For Use With Dial Test Indicator Includes Measuring Insert Includes Case Yes Number of Pieces 1 Overall Length 0.812 in Stem Dia 0.08 in Stem Thread Size M1.7 x 4.00 Contact Point Tip Diameter 0.080 in Contact Point Tip Length .812 in