- Graduation 0.01mm
- Accuracy: (6+L/50)µm L=maximum measuring length (mm)
- Optional accessary: setting ring (code 6312)
| Code | Range | Travel of micrometer head | Extention rods |
| 3221-32 | 25-32mm | 7mm | – |
| 3221-50 | 25-50mm | 7mm | 2pcs |
| 3221-63 | 50-63mm | 13mm | – |
| 3221-200 | 50-200mm | 13mm | 6pcs |
| 3221-300 | 50-300mm | 13mm | 10pcs |
| 3221-225 | 200-225mm | 25mm | – |
| 3221-500 | 200-500mm | 25mm | 3pcs |
| 3221-1000 | 200-1000mm | 25mm | 8pcs |
