Insize ISR-CSE326, SURFACE ROUGHNESS SPECIMEN, 6pcs per set, 6928640376665

Machining method linishing (belt sanding).
Ra: 4, 8, 16, 32, 63, 125_in. Rz: 36, 62, 135, 297, 740, 1240_in. Quantity 6pcs.
For checking, identifying and specifying the roughness by symbol.
Rust-proof, made of pure Nickel.