Coaxial Centering Dial Indicator Set, Metric

CO-AX Centering Indicator - To quickly center work pieces or fixtures on your mill. Use this indicator to quickly center work pieces or fixtures on your mill. The measuring range is 0.25''. The shank is 0.375'' diameter and 0.75'' long. The indicator is 5.5'' long. Can measure internal diameters from 0.12'' to 4.25'' and external diameters from zero to 4.25''. This set includes: Indicator body, restraining rod prevents rotation, spring-loaded center point feeler, three straight feelers for IDs, three curved feelers for ODs. Length: 6 7/8''/175 mm. Shank dia.: 3/8'' x 7/8'' long 10 x 20 mm long. Feeler dia.: 1/8'' /3 mm. Measuring range: 0.25'' of axis. Dial reading: 0 - 50. Graduation: 0.0005''. Includes 6 Feelers: 4'', 8'', 12'' Straight, 4'', 8'', 12'' Curved. Capacity: 5/32'' - 4 1/4'' internal, 0 - 4 1/4'' external. Locating accuracy is 0.0005'' of center. Operates at any angle from horizontal to vertical without any change, and from internal to external by simply changing the feeler. Supplied in a fitted wood case. This set includes: Indicator body, restraining rod prevents rotation, spring-loaded center point feeler, three straight feelers for IDs, three curved feelers for ODs.