Mitutoyo SJ-210 - Evaluating Based on VDA

18. Reference Information
No.99MBB122A
18-3
18.1.3 Evaluating based on VDA
Shown below are the standard cut-off values, sampling lengths, and evaluation lengths for
evaluation based on VDA.
NOTE
• With the SJ-210, when the VDA standard is selected, the λs filter automatically changes
to (NONE). To enable the λs filter, refer to 7.6, “Modifying Items Related to Cut-off”.
• Be aware that with the VDA standard, there are some differences with JIS B0601-2001
and ISO, such as λs not being set by default.
■ Standard sampling lengths and evaluation lengths for the measurement of Ra and Rq from non-periodic
roughness profiles
Ra Range Sampling length (ℓ) Evaluation length (ℓn)
㧔0.006㧕 㧨
Ra
҇
0.02 µm 0.08 mm 0.4 mm
0.02
㧨
Ra
҇
0.1 µm 0.25 mm 1.25 mm
0.1
㧨
Ra
҇
2.0 µm 0.8 mm 4 mm
2.0
㧨
Ra
҇
10.0 µm 2.5 mm 12.5 mm
10.0
㧨
Ra
҇
80.0 µm 8 mm 40 mm