Product name
High-precision digital surface roughness tester, finish tester
Sampling length(lr)
0.25,0.8,2.5mm
Evaluation length(ln)
Ln= lr*n n=1~5
Indication error
not more than±10%
Indication variability
not more than 6%
Power
Built-in lithium ion rechargeable battery
Working environment
Tempetature:- 20℃ ~ 40℃ Humidity:< 90% RH
Storage and transportation environment
Temperature:- 40℃ ~ 60℃ Humidity:< 90% RH