Engineers Straight Steel Edges. These are widely used for checking straightness and marking purposes. Steel straight edges are made using high quality steel and are available in hardened and unhardened form. Our steel straight edges are hand scrapped or lapped to achieve the desired accuracy as per standards. Light in weight, design of these straight edges make them ideal to use in various industries such as Glass, Fabrication and windmill. The Engineer’s steel straight edges of bigger size are provided with milling slots to reduce weight. Our Steel Straight edges are supplied with computerized calibration certificate traceable to National Physical Laboratory (NPL, Govt Of India ) New Delhi.
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Standard sizes and accuracy of Luthra Engineer’s Steel Straight Edges as per IS:2220-1990, Grade-1:
| Dimensions LXBXH mm | Straightness um | Parallelism um |
| 300 X 35 X 8 | 12 | 24 |
| 450 X 35 X 8 | 12 | 24 |
| 600 X 50 X 8 | 15 | 30 |
| lOOOx 50 x 8 | 21 | 42 |
| 1200 X 55 X 10 | 25 | 50 |
| 1500 X 65 X 12 | 29 | 58 |
| 2000 X 65 X 12 | 37 | 74 |
| 2500 X 65 X 12 | 46 | 92 |
| 3000X 85 X 18 | 54 | 108 |
| 4000 X 100 X 20 | 71 | 142 |
| 5000 X 100 X 20 | 87 | 174 |
| 6000 X 120 X 20 | 100 | 200 |