TROMBONE “USA-LINE”
| No. | 4 | 4 C | 5 | 6 ¬Ω AL | 7 C | 11 C | 12 C | 12 E | 15 |
| rim mm √ò | 39.4 | 38.2 | 39.1 | 39.2 | 37.8 | 38.6 | 38.2 | 38.2 | 37.2 |
| cup mm √ò | 26.0 | 26.0 | 25.3 | 24.8 | 24.5 | 24.5 | 24.0 | 24.3 | 24.3 |
| No. | 4 | 4 C | 5 | 6 ¬Ω AL | 7 C | 11 C | 12 C | 12 E | 15 |
| rim mm √ò | 39.4 | 38.2 | 39.1 | 39.2 | 37.8 | 38.6 | 38.2 | 38.2 | 37.2 |
| cup mm √ò | 26.0 | 26.0 | 25.3 | 24.8 | 24.5 | 24.5 | 24.0 | 24.3 | 24.3 |