For use with V-anvil and conical spindle inserts for measuring pitch diameters of screw threads (sold separately) Vernier scale in metric units with slanted barrel markings to help reduce parallax...
Brown & Sharpe Intrimik A models are available to read diameters from .275³ to 12³. With optional extensions, the depth of the bore can be as much as 40 inches. Metric versions read from 3.5 mm...