Insize ISR-CSE319, SURFACE ROUGHNESS SPECIMEN, 8pcs per set, 6928640376603

Machining method face turning.
Ra: 16, 32, 63, 125, 250, 500, 1000, 2000_in. Rz: 76.8, 128, 246, 500, 950, 1950, 4010, 7400_in.
For checking, identifying and specifying the roughness by symbol.
Rust-proof, made of pure Nickel.