SPI Inch / Metric Dial Caliper Features Include... Measuring Range: 0-6" / 150mm Graduations: 0.001" / 0.02mm Dial Reading: 0-100 / 2mm Jaw Length: 1.57" / 40mm Jaw Thickness: 0.138" Accuracy: + 0.001" / 0.02mm Dial Color: White 4-way measurement: inside, outside, depth and step Certificate of Calibration included Furnished in fitted case