This Insize 1108-300 is a 0-300mm digital vernier scale that is made of durable stainless steel. It is powered by a CR2032 battery that provides long backup time. Also, it comes with an auto-off function, and it can convert metric/inch. This caliper can be used for manufacturing, CNC machining, automotive, and quality control. Moreover, it can measure the outer diameter, inner diameter, step, and depth