An essential tool for accurate measurement with stainless steel casing and frame. Extra-large LCD digital readout for exact measurement accurate to .0005-inch (0.01-mm). Instantly converts from SAE or Metric. Fractional display makes reading measurements easy. The display can be zeroed at any point on the slide. Machine-grooved thumb-roll mechanism and position lock for sure adjustment. Hardened stainless steel shaft with depth-measurement probe, precision ground jaws. On-off switch with auto-off. Two batteries included (one extra). The display flashes for low battery notification, to switch to a new fresh battery. A convenient mini-screwdriver is included in the box. Custom fitted case included.