| |||
| centre m; point central | |||
| position ou division de réglage de la bulle d'un niveau | |||
| point médian | |||
| point milieu | |||
|
mid-points : 21 phrases in 10 subjects |
| Astronomy | 1 |
| Communications | 1 |
| Electric machinery | 1 |
| Electronics | 1 |
| Finances | 1 |
| Forestry | 1 |
| Statistics | 10 |
| Technology | 1 |
| Telecommunications | 1 |
| Transport | 3 |