Vernier calipers have a fixed jaw paired with a sliding jaw that moves along a graduated scale to take inside and outside measurements. - The jaws are used to contact the opposite sides of an object, workpiece, or feature. - Operators read the main and vernier scales and add the values together to determine the reading. - These calipers require expertise to read correctly. Range / 0 in to 8 in, 0 mm to 203.2 mm Graduations / 0.05 mm Accuracy / +/-0.03 mm Caliper Material / Stainless Steel Dimension Type / Inch/Metric Graduations - Lower Scale / 0.05 mm Graduations - Upper Scale / 0.05 mm Jaw Actuation Type / Thumb Wheel Jaw Depth / 1 31/32 in Maximum Measurement - Decimal Inch / 8 in Maximum Measurement - Fractional Inch / 8 in Maximum Measurement - mm / 203 mm Measurements / 4-Way Measures Depth / Yes Measures Inside Dimension / Yes Measures Outside Dimension / Yes Measures Step / Yes Minimum Measurement - Decimal Inch / 0 in Minimum Measurement - Fractional Inch / 0 in Minimum Measurement - mm / 0 mm Operation Type / Mechanical Case Included / Yes Case Type / Vinyl Holster with Fitted Carton Finish / Satin Chrome Jaw Shape / Standard Jaw With Locking Nut / Yes