| Length | : | 400mm |
| Number of Vials | : | 2 |
| Accuracy | : | 1 mm/m |
| Magnetic | : | Yes |
| Dimensions | : | 400 x 21 x 50mm |
| Height | : | 50mm |
| Model Number p | : | 309BM |
| Width | : | 21mm |
| Length | : | 400mm |
| Number of Vials | : | 2 |
| Accuracy | : | 1 mm/m |
| Magnetic | : | Yes |
| Dimensions | : | 400 x 21 x 50mm |
| Height | : | 50mm |
| Model Number p | : | 309BM |
| Width | : | 21mm |