Insize ISR-CSE323, SURFACE ROUGHNESS SPECIMEN, 8pcs per set, 6928640376641

Machining method horizontal milling.
Ra: 16, 32, 63, 125, 250, 500, 1000, 2000_in. Rz: 72, 147, 265, 512, 1025, 2120, 3900, 7880_in.
For checking, identifying and specifying the roughness by symbol.
Rust-proof, made of pure Nickel.