Gage Ball 20mm w 4/48 Stem

Metric Indicator Ball with 4-48 stems for Flexbar Precision Indicator Gage Ball SystemTM (Size: 29mm). Precision Grade Gage Balls with affixed threaded stems for use with dial gages and calipers. The system enables you to measure critical internal taper angles, taper openings, chamfers, groove locations and hole depths quickly and accurately. With the Precision Indicator gage Balls you eliminate complicated and costly setups with sine plates (gage blocks), optical comparators, flush pin gages, plug gages, chamfer, micrometers and similar checking devices for any related taper bore dimensions.