Bowers Extension EGX0500 Length 100mm (4'') for heads 12.5-20mm (1/2" / 3/4") Granite Squares The bore gauge comes with

The bore gauge comes with interchangeable anvils to measure different bore diameters with the same gauge

- Ball contact: hard metal

Description Sine bar style of precision vice

Power supply: 1

Removable base plate with 25 #10-32 UNF holes for fixture mounting

Bowers Extension EGX0500 Length 100mm (4'') for heads 12.5-20mm (1/2" / 3/4") Granite Squares The bore gauge comes withExtensions for Bowers micrometers For measuring in deep holes. Transfer pins spring mounted in satin chrome plated steel sleeve. For screwing between the measuring head and the micrometer Bowers Extension EGX0500 Length 100mm (4'') for heads 12. 5 20mm (1 2" 3 4")