RANGE 1.75″ TO 10″ (45 MM – 254 MM)
Fits through all B&D boring bars with broached 1/2″ and 3/8″ tool ports. The telescoping gauge measures the I.D. of the bore through an open tool port in the boring bar. It is spring-loaded so the operator can get an exact measurement (within .001″) without having to remove the boring bar from the bore.
