SPI Electronic Caliper Features Include... 0-6" / 150mm Measuring Range 0.0005" / 0.01mm Resolution +0.001" / 0.02mm Accuracy 1 19/32" Jaw Length Precision ground stainless steel construction. Inch-Metric conversion. Absolute or Incremental position switching. Zero set anywhere within range. Auto power on/off. Includes Certificate of Calibration Furnished in fitted case. Ground Freight ONLY