| 1.5 : 1 | 2 : 1 | 3 : 1 |
|---|---|---|
| 15:10 | 20:10 | 30:10 |
| 30:20 | 30:15 | 40:12 |
| 40:25 | 40:20 | 50:15 |
| 50:30 | 50:25 | 60:20 |
| 60:40 | 60:30 | 80:25 |
| 80:50 | 80:40 | 100:30 |
| 100:60 | 100:50 | 120:40 |
| 120:80 | 120:60 | 150:50 |
| 150:100 | 150:80 | 200:60 |
| 200:120 | 200:100 |
Note: Where the existing standard sizes do not provide exact rations, the nearest available size is used.