Fowler 52 250 111 1 Inch Disc Micrometer, 0 1" Measuring Range, 0.0001" Graduation, 0.00016" Accuracy

Outside micrometer with 0 to 1" measuring range and disc-style anvil/spindle pair measures thickness of narrow grooves and difficult or closely spaced areas, such as slots and recesses Vernier scale has 0.001" graduations and an accuracy of 0.00016" to provide precise readings and accurate measurements Hardened, ground, and micro-lapped anvil/spindle pair provides wear resistance Positive locking lever locks measurement in place for accurate reading Ratchet stop applies constant force for repeatability between users