Insize Groove Micrometers, Outside A 3-4", Inside B 3.05-4.05"

Graduation .001". Measure width of grooves inside bores. Non-rotating spindleTwo graduations for inside and outside measurement.Two-directional ratchet stop

Graduation .001". Measure width of grooves inside bores. Non-rotating spindleTwo graduations for inside and outside measurement.Two-directional ratchet stop

Graduation .001". Measure width of grooves inside bores. Non-rotating spindleTwo graduations for inside and outside measurement.Two-directional ratchet stop

Graduation .0001". Carbide measuring faces. Ratchet stop typeSupplied with setting standards (except 0-1").

Graduation .001"Ratchet stop. Carbide measuring faces. Optional accessary: setting ring (part no. 6313), micrometer stand and clamp (part no. 6301 and 6301-1).