Starrett® Outside Micrometer, Electronic Imperial, Series: 714.1, 0 to 4 in Measuring, +/-0.0001 in Accuracy, 0.00005 in Resolution, Interchangeable/Flat Anvil, Flat Spindle, 1/4 in Spindle Diameter, Friction Thimble, Large Digital LCD Display, Steel Anvil, 4-27/64 in H Dimensions