For checking, identifying and specifying
the roughness by symbol
Accuracy: +20% ~ -25%, Ra<0.1µm
Accuracy: +12% ~ -17%, Ra>0.1µm
Meets ISO 2632 (ISR-CS329 meets ISO 8503/1)
Rust-proof, made of pure Nickel
Roughness (Ra) : 0.2, 0.4, 0.8, 1.6, 3.2, 6.3µm
Roughness (Rz): 1.1, 3.5, 6.15, 8.78, 22.19, 40.8µm
