Features ​The 6-inch caliper is suitable for the measurement and inspection of the blank size of forgings. The outer caliper is used to measure the outer diameter of a cylinder or the length of an object. The inner caliper is used to measure the inner diameter or groove width of a cylindrical hole. Material: Made of high-quality stainless steel, strong, rust-proof and durable. A caliper is a tool for measuring length. Caliper size: about 150mm (6 inches). 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. The outer caliper is used to measure the outer diameter of the cylinder or the length of the object. The inner caliper is used to measure the inner diameter or groove width of the cylindrical hole. Features: The 6-inch caliper is suitable for the measurement and inspection of the blank size of forgings. The outer caliper is used to measure the outer diameter of a cylinder or the length of an object. The inner caliper is used to measure the inner diameter or groove width of a cylindrical hole. Material: Made of high-quality stainless steel, strong, rust-proof and durable. A caliper is a tool for measuring length. Caliper size: about 150mm (6 inches). Specification: Condition: 100% Brand New Product Name: Caliper Material: Stainless steel Caliper size: about 150mm (6 inch) Usage: measurement Package list: 2 * Calipers Package List