Feature●Accurate Measurements: Has an accuracy of ±0.001"; hardened stainless steel body with measuring faces that are precision ground and micro-lapped for exceptional accuracy●4 Measuring Capabilities: These dial calipers can be used to measure inside dimensions (ID), outside dimensions (OD), depth, and step measurements●Knurled Lock: Dial calipers feature a knurled lock screw that holds the sliding jaw in position to maintain measurement when needed; includes a thumb roll for rapid setting●Colored Graduations: The large black dial has 0.001" and beam has 0.100" graduations; one revolution equivalent to 0.100"; scale surface has a satin-chrome finish to prevent glare and reduce operator fatigue; microfine graduations read in inches●Set Includes: A Fowler dial caliper along and fitted storage caseDescription The Fowler 52-008-005-0 Black Face Dial Caliper has a scale surface with satin-chrome finish to prevent glare and reduce operator fatigue. Microfine graduations read in inches. This vernier caliper is used for measuring inside dimensions (ID), outside dimensions (OD), depth, and step. Caliper measuring tool is made of hardened stainless steel. Fowler, an American company, manufactures premium inspection and measurement instruments like electronic indicators, calipers, bore gages, and digital scales. The company, founded in 1946, is headquartered in Newton, MA.