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Feature
5/16", 3/8" Spindle hole diameters9/64", 5/32", 3/16", 1/4" Gripping hole diameters
Convenient attachment of scribers and test indicator shanks to surface gauges, magnetic bases, indicator tool post holders and gauge rods
Starrett No. 57 surface gages and test indicator clamps and post holders
Snugs must be used with the proper indicator holder