The traditional Dial Caliper used by professional for decades. The Empire 6" Dial Caliper (2767) dial reads inches and mm. 4-way measuring including inside, outside, depth and step. Adjustable bezel realignment to 0. Fiberglass reinforced nylon with milled jaws for precision. 8-3/4" long. Thumb lock holds measurement. See all pictures.  Warranty is with the manufacturer.