Gauge Size Reference Chart
| Gauge Reference Chart | ||
| Gauge | Millimeters | Inches |
| 1 | 7.348 | 0.289 |
| 2 | 6.543 | 0.258 |
| 3 | 5.827 | 0.229 |
| 4 | 5.189 | 0.204 |
| 5 | 4.62 | 0.182 |
| 6 | 4.115 | 0.162 |
| 7 | 3.663 | 0.144 |
| 8 | 3.261 | 0.129 |
| 9 | 2.906 | 0.114 |
| 10 | 2.586 | 0.102 |
| 11 | 2.304 | 0.09 |
| 12 | 2.052 | 0.08 |
| 13 | 1.826 | 0.072 |
| 14 | 1.626 | 0.064 |
| 15 | 1.448 | 0.057 |
| 16 | 1.29 | 0.05 |
| 17 | 1.148 | 0.045 |
| 18 | 1.024 | 0.04 |
| 19 | 0.912 | 0.036 |
| 20 | 0.813 | 0.032 |
| 21 | 0.724 | 0.029 |
| 22 | 0.643 | 0.025 |
| 23 | 0.574 | 0.023 |
| 24 | 0.511 | 0.02 |
| 25 | 0.455 | 0.018 |
| 26 | 0.404 | 0.016 |
| 27 | 0.361 | 0.014 |
| 28 | 0.33 | 0.013 |
| 29 | 0.279 | 0.011 |
| 30 | 0.254 | 0.01 |