Features 【Caliper Size】The size of caliper is 150mm (6 inch) 【Inside Outside Calipers】The outer caliper is used to measure the outer diameter or the length of the object.The inner caliper is used to measure the inner diameter or groove width 【Material】The inside outside calipers are made of high quality stainless steel, solid and antirust. 【Purpose】The caliper is a tool for measuring the length, which is divided into a tableless caliper and a table caliper. The method of use is a steel ruler size method and a caliper measurement method 【Wide Applications】The caliper tool is widely used in the measurement and inspection of less demanding parts, especially for the measurement and inspection of the blank size of forgings Specification: Material: Stainless steel Caliper size: about 150mm (6 inch) Usage: measurement Package List: 2 * Calipers Package List