Insize ISR-CSE320, SURFACE ROUGHNESS SPECIMEN, 8pcs per set, 6928640376610

Machining method cylindrical turning.
Ra: 16, 32, 63, 125, 250, 500, 1000, 2000_in. Rz: 68, 128, 244, 488, 950, 1900, 3800, 7600_in.
For checking, identifying and specifying the roughness by symbol.
Rust-proof, made of pure Nickel.