| |||
| clef f; clavette de serrage | |||
| |||
| clavette de serrage; coin de serrage | |||
|
locking wedge : 3 phrases in 2 subjects |
| Metallurgy | 2 |
| Mining | 1 |
| |||
| clef f; clavette de serrage | |||
| |||
| clavette de serrage; coin de serrage | |||
|
locking wedge : 3 phrases in 2 subjects |
| Metallurgy | 2 |
| Mining | 1 |