| 1. | Look at a ruler to see how small this is .
看看直尺便可知道这是多么小。 |
| 2. | With straightedge and compasses, divide a segment of a into 2 parts .
用直尺和圆规把线段a分成两部分。 |
| 3. | Each step of the construction of a circle with straightedge and compass calls for finding a point of intersection .
用圆规、直尺作圆的每一步都需要找一个交点。 |
| 4. | Non - conventional precision repair of standard rule
非常规法直尺精度修复 |
| 5. | Measuring instruments . steel straight edges
测量仪器.钢制扁平直尺 |
| 6. | Verification regulation of straight edge
刀口形直尺检定规程 |
| 7. | Measuring instruments . knife edge rules
测量仪器.锐边直尺 |
| 8. | I simply heated a ruler in the fire and pressed it on it
就是把那直尺搁在火上烧红，向这个部位一按！ ” |
| 9. | Verification regulation of steel rule
钢直尺检定规程 |
| 10. | I specification for straightedges - cast iron straightedges bow shaped and i - section
直尺规范.第1部分:铸铁直尺 |
