- Large thimble diameter for easy reading
- Graduation 0.01mm
| Code | Range | Stem | Spindle tip | Accuracy |
| 6373-65 | 0-6.5mm | with clamp nut | flat (carbide) | 3µm |
| 6373-65W | 0-6.5mm | plain | flat (carbide) | 3µm |
| 6373-65S | 0-6.5mm | with clamp nut | spherical (SR3) | 3µm |
| 6373-65WS | 0-6.5mm | plain | spherical (SR3) | 3µm |
| 6373-13 | 0-6.5mm | with clamp nut | flat (carbide) | 3µm |
| 6373-13W | 0-6.5mm | plain | flat (carbide) | 3µm |
