- Measure wall thickness of tubes
- Graduation 0.01mm
- Ratchet stop
- Carbide measuring faces
- Supplied with setting standards (except 0-25mm)
| Code | Range | Type | Accuracy | L | b |
| 3260-25A | 0-25mm | A | 4μm | 32 | 24 |
| 3260-50A | 25-50mm | A | 4μm | 57 | 32 |
| 3260-75A | 50-75mm | A | 5μm | 82 | 44.5 |
| 3260-100A | 75-100mm | A | 5μm | 107 | 57 |
| 3260-25SA | 0-25mm | B | 4μm | 32 | 24 |
| 3260-50SA | 25-50mm | B | 4μm | 57 | 32 |
| 3260-75SA | 50-75mm | B | 5μm | 82 | 44.5 |
| 3260-100SA | 75-100mm | B | 5μm | 107 | 57 |