U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
| Inches | Millimeters (mm) |
|---|---|
|
| 6.4 |
|
| 7.9 |
|
| 9.5 |
|
| 12.7 |
|
| 15.9 |
|
| 19.1 |
|
| 22.2 |
| 1 equals | 25.4 |
| 1
| 31.8 |
| 2
| 55.6 |
| 2
| 57.2 |
| 2
| 61.9 |
| 2
| 63.5 |
| 2
| 65.1 |
| 2
| 68.3 |
| 2
| 69.9 |
| 2
| 74.6 |
| 3
| 77.8 |
| 3
| 81.0 |
| 3
| 84.1 |
| 3
| 87.3 |
| 3
| 90.5 |
| 3
| 96.8 |
