3 Button: mm/inch/Frac on, off, Zero. On/Off Switch w/ Automatic Shutoff. Easy to operate, one button to switch between inches to mm. Hardened stainless steel shaft with depth-measurement probe, precision ground jaws. [MEASUREMENT]: One button quick-change between three measuring modes: inch, fractions, millimeter, so there is no need to convert separately. [QUALITY]: Finely polished stainless… Read the full article