- Measure the radius of arc less than half round
- Resolution: 0.01mm/0.0005″
- Buttons: on/off, zero, mm/inch
- Automatic power off, move the digital unit to turn on power
- Battery CR2032
- Data output
- Made of stainless steel
- Optional accessory: data output system
| Code | Range | Accuracy | L | c | d |
| 1189-150B | 5-150mm/0.2-6″ | 0.05mm | 263 | 16 | 65 |
| 1189-150B | 5-200mm/0.2-8″ | 0.07mm | 313 | 16 | 85 |