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- Contact Person : Ms. Juliet Wong
- Company Name : Botou Jingda Tools and Measuring Instruments Co.,Ltd
- Tel : 86-317-5561573
- Fax : 86-317-8294068
- Address : Hebei,Botou City,Chezhan street
- Country/Region : China
- Zip : 062150
Straight edge
Product Detailed
Related Categories:Other Measuring & Gauging Tools
Made according to standard JB/T7977-99, working surface made by skiving or precise rubbing. Used to test the straightness and flatness of workpiece and equipment installing. Working environment temperature (20 ± 5) ℃.
| Type (mm) | Straightness and flatness of working surface |
Parallelism between working surfaces | ||||
| Precision grade ( μm) | ||||||
| 0 | 1 | 2 | 0 | 1 | 2 | |
| 500 × 35 | 3 | 6 | 12 | 4.5 | 9 | 18 |
| 750 × 40 | 4 | 8 | 15 | 6 | 12 | 25 |
| 1000 × 50 | 5 | 10 | 20 | 7.5 | 15 | 30 |
| 1250 × 50 | 12 | 24 | 18 | 36 | ||
| 1600 × 70 | 15 | 30 | 20 | 40 | ||
| 2000 × 80 | 18 | 36 | 27 | 54 | ||
| 2500 × 80 | 44 | 65 | ||||
| 3000 × 100 | 52 | 78 | ||||
| 3500 × 100 | 60 | 90 | ||||
| 4000 × 100 | 68 | 100 | ||||
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