OD/ID Vernier Caliper Range 0 in to 48 in Graduations 1/512 in Accuracy +/-0.0005 in (per foot) Caliper Material Steel Dimension Type Fractional Inch Graduations - Lower Scale 0.001 in Graduations - Upper Scale 0.001 in Jaw Actuation Type Slide Jaw Depth 3 in Maximum Measurement - Decimal Inch 48 in Maximum Measurement - Fractional Inch 48 in Measurements Inside Outside Measures Depth No Measures Inside Dimension Yes Measures Outside Dimension Yes Measures Step No