- 作為機器，模具，夾具等的角度測量、裝配加工的基準，使用的精密角度測量設備。
- 可安裝在高度尺上使用。
- 分度值: 5′
規格:
| Metric | Inch | ||||
| Order No. | Blade length (mm) | Remarks | Order No. | Blade length (in) | Remarks |
| 187-901 | 150, 300 | w/60o, 45o, 30o edges | 187-902 | 6, 12 | w/60o, 45o, 30o edges |
| 187-907 | 150 | w/60o, 45o edges | 187-904 | 6 | w/60o, 45o edges |
| 187-908 | 300 | w/60o, 45o edges | 187-906 | 12 | w/60o, 45o edges |
| Order No. | Blade length (mm) | Remarks |
| 187-201 | 137 | w/60o, 30o edges |
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