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Table 2
The measurement results of Ra determined from the PS method under different slant angles.
| Slant | Standard roughness nominal value (μm) |
PS method average value |
Standard deviation |
|---|---|---|---|
| 37.5° | 3.2 | 0.00027 | 0.000001 |
| 6.3 | 0.00041 | 0.000002 | |
| 12.5 | 0.00051 | 0.000001 | |
| 25 | 0.00096 | 0.000002 | |
| 50 | 0.0011 | 0.000002 | |
| 45° | 3.2 | 0.00020 | 0.000001 |
| 6.3 | 0.00025 | 0.000002 | |
| 12.5 | 0.00030 | 0.000002 | |
| 25 | 0.00049 | 0.000001 | |
| 50 | 0.00065 | 0.000002 | |
| 52.5° | 3.2 | 0.00013 | 0.000001 |
| 6.3 | 0.00022 | 0.000001 | |
| 12.5 | 0.00027 | 0.000002 | |
| 25 | 0.00040 | 0.000002 | |
| 50 | 0.00045 | 0.000002 |
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