Light-weight comparator presented in a plastic wallet, with an instruction card giving full details on the roughness values of the specimens.
Specification
| Machining Method |
Surface grinding |
| Number of Patches |
8 |
| Ranges of roughness values |
| Ra (µm) |
0.025 to 3.2 |
| Rz (µm) |
0.25 to 16 |
| N-groups |
1 to 8 |
