SPI Inch / Metric Dial Caliper Features Include... Measuring Range: 0-12" / 300mm Graduations: 0.001" / 0.02mm Dial Reading: 0-100 / 2mm Jaw Length: 2.50" / 64mm Jaw Thickness: 0.157" Accuracy: + 0.0015" / 0.04mm Dial Color: White 4-way measurement: inside, outside, depth and step Certificate of Calibration included Furnished in fitted case