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About Gage Ball 0.3125"W 4/48 Stem
Inch Gage Indicator Ball with 4-48 stems for Flexbar Precision Indicator Gage Ball System (Size: .3125); Precision Grade Gage Balls with affixed threaded stems for use with dial gages and calipers. Easy to use and enables you to measure critical internal taper angles, taper openings, chamfers, groove locations and hole depths both quickly and accurately. Precision Indicator Gage Ball System eliminates complicated and costly setups with sine plates (gage block), optical comparators, flush pin gages, plug gages, chamfer, micrometers and similar checking devices for any related taper bore dimensions. System includes: a set of thirty-one balls chrome steel hardened to 63RC, ground and lapped, and certified to grade 25 Accuracy °.0001 inch diameter, sphericity .000025 inch, sizes ranging from .0938 to 1.2500 with affixed 4-48 threaded indicator stems.
