- Resolution 0.001mm/0.00005″
- Button function: on/off, set, mm/inch, ABS/INC
- No data output
- LR44 battery, automatic power off
- Carbide tips Ratchet thimble
- Supplied with spherical anvil
- Setting standards are included (except 0-25mm/0-1″)
| Code | Range | Accuracy | L | a | b |
| 3109-25A* | 0-25mm/0-1″ | 2µm | 32 | 6 | 27.5 |
| 3109-50A* | 25-50mm/1-2″ | 2µm | 57 | 8 | 37 |
| 3109-75A* | 50-75mm/2-3″ | 3µm | 82 | 8 | 50 |
| 3109-100A* | 75-100mm/3-4″ | 3µm | 107 | 10 | 61 |
*Supplied with manufacturer inspection certificate traceable to DKD Germany
