| Range | Accuracy | Thimble | Code No. | |
|---|---|---|---|---|
| 0-25mm / 0-1″ | ± 0.002mm | Dual Ratchets | 105-01-4 | |
| 25-50mm / 1-2″ | ± 0.002mm | Dual Ratchets | 105-02-4 | |
| 50-75mm / 2-3″ | ± 0.003mm | Dual Ratchets | 105-03-4 | |
| 75-100mm / 3-4″ | ± 0.003mm | Dual Ratchets | 105-04-4 | |
| 100-125mm / 4-5″ | ± 0.003mm | Dual Ratchets | 105-05-4 | |
| 125-150mm / 5-6″ | ± 0.003mm | Dual Ratchets | 105-06-4 |