| 1. | This compass serves as a protractor .
这个罗盘可用作分度规。 |
| 2. | Specification for protractors for drawing office use
制图室用分度规规范 |
| 3. | Verification regulation universal bevel protractors
万能角度尺检定规程 |
| 4. | Specification for bevel protractors mechanical and optical
斜量角规 |
| 5. | A discussion on experiment by demonstrating a protractor for radian
浅议弧度制的演示实验教学 |
| 6. | Vernier universal bevel protractor
游标万能角度尺 |
| 7. | Dial universal bevel protractor
带表万能角度尺 |
| 8. | Draughting instruments with or without graduation . part 2 : protractors
带刻度或不带刻度的绘图仪器.第2部分:量角器 |
| 9. | Drawing ruler - protractor
绘图仪尺.量角器 |
| 10. | Air navigation protractor
空中导航用量角器 |
