Fowler 52-222-201 Steel EZ-Read Digit Outside Micrometer, 0-1" Measuring Range, 0.0002" Accuracy, 0.0001" Resolution Outside micrometer with choice of measuring range and flat anvil/spindle pair for general purpose measuring Digit display has 0.0001" graduation intervals and an accuracy of 0.0002" for precise readings Carbide-tipped measuring faces provide wear resistance Friction thimble provides smooth and quiet operation, and is suitable for one-handed operation Insulated steel frame helps reduce temperature-related expansion or contraction