| Metrica | Diameter Dw (mm) | Uncia | Diameter Dw (mm) | |
| 0.3 mm | 0.30000 | 1/32 | 0.79375 | |
| 0.4 mm | 0.40000 | 3/64 | 1.19062 | |
| 0.5mm | 0.50000 | 1/16 | 1.58750 | |
| 0.6mm | 0.60000 | 5/64 | 1.98438 | |
| 0.7mm | 0.70000 | 3/32 | 2.38125 | |
| 0.8mm | 0.80000 | VII/LXIV | 2.77812 | |
| 1mm | 1.00000 | 1/8 | 3.17500 | |
| 1.2mm | 1.20000 | 9/64 | 3.57188 | |
| 1.5mm | 1.50000 | 5/32 | 3.96875 | |
| 2mm | 2.00000 | III/XVI | 4.76250 | |
| 2.5mm | 2.50000 | VII/XXXII | 5.55625 | |
| 2.8mm | 2.80000 | XV/LXIV | 5.95312 | |
| 3mm | 3.00000 | Quarta pars | 6.35000 | |
| 3.5mm | 3.50000 | XVII/LXIV | 6.74688 | |
| 4mm | 4.00000 | 9/32 | 7.14375 | |
| 4.5mm | 4.50000 | 5/16 | 7.93750 | |
| 5mm | 5.00000 | XI/XXXII | 8.73125 | |
| 5.5mm | 5.50000 | 3/8 | 9.52500 | |
| 6mm | Sex milia milium | XIII/XXXII | 10.31875 | |
| 6.5mm | 6.50000 | VII/XVI | 11.11250 | |
| Septem millimetra | 7.00000 | XV/XXXII | 11.90625 | |
| 7.5mm | 7.50000 | Dimidium | 12.70000 | |
| 8mm | 8.00000 | XVII/XXXII | 13.49375 | |
| 8.5mm | 8.50000 | XVI Kalendas Septembres | 14.28750 | |
| 9mm | 9.00000 | XIX/XXXII | 15.08125 | |
| 10mm | 10.00000 | 5/8 | 15.87500 | |
| 11 mm | 11.00000 | XXI/XXXII | 16.66875 | |
| 11.5mm | 11.50000 | XVI Kalendas Ianuarias | 17.46250 | |
| 12mm | Duodecim milia | XXIII/XXXII | 18.25625 | |
| 13mm | 13.00000 | Tres quartae partes | 19.05000 | |
| 14 mm | 14.00000 | XXV/XXXII | 19.84375 | |
| XV mm | 15.00000 | XIII/XVI | 20.63750 | |
| 16mm | 16.00000 | XXVII/XXXII | 21.43125 | |
| 17mm | 17.00000 | VII/VIII | 22.22500 | |
| 18mm | 18.00000 | XXIX/XXXII | 23.01875 | |
| 19mm | 19.00000 | XV/XVI | 23.81250 | |
| XX mm | Viginti milia | XXXI/XXXII | 24.60625 | |
| 21mm | 21.00000 | 1 | 25.40000 | |
| 22 mm | 22.00000 | XVI Kalendas Ianuarias | 26.9875 | |
| 23mm | 23.00000 | VIII/XI | 28.57500 | |
| 24 mm | 24.00000 | 1 - 1/16" | 26.98800 | |
| 25mm | 25.00000 | 1 - 1/8" | 28.57500 | |
| 26mm | 26.00000 | 1 - 3/16" | 30.16300 | |
| 28mm | 28.00000 | 1 - 1/4" | 31.75000 | |
| Triginta millimetra | 30.00000 | 1 - 5/16" | 33.33800 | |
| 32mm | 32.00000 | 1 - 3/8" | 34.92500 | |
| 34mm | 34.00000 | 1 - 7/16" | 36.51300 | |
| 35mm | 35.00000 | 1 - 1/2" | 38.10000 | |
| 36mm | 36.00000 | 1.9/16" | 39.68800 | |
| 38mm | 38.00000 | 1.5/8" | 41.27500 | |
| 40mm | 40.00000 | 1.11/16" | 42.86300 | |
| 45mm | 45.00000 | 1.3/4" | 44.45000 | |
| 50mm | 50.00000 | 1.13/16" | 46.03800 | |
| 55mm | 55.00000 | 1.7/8" | 47.62500 | |
| 60mm | sexaginta milia milium | 1.15/16" | 49.21200 | |
| 2" | 50.80000 | |||
| 2.1/8" | 53.97500 | |||
| 2.1/4" | 57.15000 | |||
| 2.3/8" | 60.32500 | |||
| 2.1/2" | 63.50000 |
