141-122 8-40" INSIDE MICROMETER

Lightweight, well balanced and rigid. Satin chrome finish with hardened, ground and lapped measuring screw. Each micrometer of <300mm (12") is supplied with handle to reach into deep holes. The set also includes spacing collar, a series of precision measuring rods and a dull chrome plated micrometer head. Spacing collars designed for making up for the limited stroke of the micrometer head. Each rod marked with length.
Easily reset - adjustment positive and permanent. High grade steel anvil, hardened, precision ground, micro-lapped and adjustable. Spanner wrench supplied with each micrometer.

Accuracy:
Instrument error: ±(6+L/50)µm.
L = maximum measuring length.

Inch Sets - Graduated: 0.001"