For checking, identifying and specifying the roughness by symbol.
Accuracy: +20% ~ -25%, Ra<0.1_m.
Accuracy: +12% ~ -17%, Ra>0.1_m.
Meets ISO 2632.
Rust-proof, made of pure Nickel.
For checking, identifying and specifying the roughness by symbol.
Accuracy: +20% ~ -25%, Ra<0.1_m.
Accuracy: +12% ~ -17%, Ra>0.1_m.
Meets ISO 2632.
Rust-proof, made of pure Nickel.
