Surface roughness
tester DR-432B
Ra:0.050~16um/0.020~629.9 uinch
Rq:0.050~16um/0.020~629.9 uinch
Rz:0.020~160 um/0.780~6299uinch
Rt:0.020~160 um/0.780~6299uinch
Measuring forceCR-4032B=4mN(0.49gf)
RadiusCR-4032B=5um
