Thread Gauge Feelers Size 12. Ball diameter 4.000 mm. Orientation locking pin parallel
Technical data
| Ball diameter | 4.00 mm |
| Ball constant | 25.00 mm |
| Number of balls | 2 |
| Orientation locking pin | Parallel |
| Locking pin Ø | 1 mm |
| Ball material | Ruby |
| Ball class | Grade 6 |