A very handy pocket dial caliper that's made of stainless steelmaterial. It is excellent for measuring the inside & outside dimensions of many things including rods, plates&tubing, etc. Readings in 1/64"& .01 Grads with a 4" measuring capacity. Designed to fit into your work belt, pocket, apron or vest. It has aknurled thumb roller enabling oneto use it with one hand, & a positive lock too. The jaws of this dial caliper areprecision ground.Includes a soft case for storage. An excellent tool formachinists, woodworkers, & mechanics. A very popular caliperwith our customers.