Calculated Industries 7408 AccuMASTER 6-Inch Digital Caliper; Fractional (1/64ths) + Inch + Metric with Largest Display Digits for Woodworkers, Stainless Steel, IP54 GIANT DISPLAY - with the absolute largest main digits available (over 5/8" tall), makes this the easiest to see and read calipers you can buy USABLE FRACTIONS - inch-fraction mode shows no smaller than 1/64ths for woodworking shop usability, also measures in decimal inch and millimeters BUTTERY SMOOTH - travel along the full 0-6" of the hardened stainless steel ruler for consistent external, internal, depth and step measurements ACCURACY - 0.001 inch (0.02mm); Resolution 1/64" (0.01mm) 0.0005 inch CERTIFIED IP54 - dust, oil and water splash resistant; includes CR-2032 battery + 1 SPARE; has battery-saving auto shut off, case and 2 year warranty