Bore Measuring Telescoping Gauge – 3/8″ Tool Ports

RANGE 1.25″ TO 5″ (45 MM – 127 MM)

Fits through all B&D boring bars with broached 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.