Fowler 52-517-612-1 DEEPTHROAT MIC 0-1"12 with ball anvil

The Fowler 52-517-611-1 deep-throat outside micrometer has a 0 to 1" measuring range on a Vernier-scale, a flat anvil/spindle pair, and a 6" deep U-shaped throat to measure the thickness of sheet metal, plastic, or rubber work pieces where a depth up to 6" is required. The Vernier scale has 0.0001" micro-fine graduations on satin chrome finish for easy reading. A 0.00003" flatness, and an accuracy of 0.0001" and 0.00005" parallelism on 0 to 1" micrometers provide accurate measurements. Carbide-tipped anvils provide wear resistance and are fitted with an adjusting collar to set the overall dimension. The spindle thread is hardened, ground, and micro-lapped to provide smooth movement, accuracy, and long life. The positive locking lever on the spindle locks measurements in place for accurate readings and the zero adjustment on the sleeve ensures accurate measurements. The ratchet-stop thimble provides an audible sound and stops turning when the spindle comes into contact with the work piece, providing constant force for consistent measurements between operators. The baked-enamel finish provides durability. Each micrometer includes a set of inter ­changeable anvils to adjust accurately the micrometer for the required range, a wrench, and a fitted case.