- Measure groove diameter
- Resolutions : 0.01mm/0.005*
- Buttons: on/off, set, mm/inch, preset(+,-)
- Automatic power off, move the digital until to turn on power
- Battery CR2032
- Data Output
- Made of stainless steel
- Optional accessory : data output system
| Code | Range | Accuracy | a | b | c | d | D | L |
| 1121-150A | 24-150mm | 0.04mm | 5 | 12 | 16 | 30 | 2 | 250 |
| 1121-200A | 25-200mm | 0.04mm | 5 | 12.5 | 16 | 40 | 2 | 310 |
| 1121-300A | 50-300mm | 0.06mm | 8 | 25 | 17 | 80 | 3 | 410 |