| Section No. | Description |
|---|---|
| Section 241.1 | Legal standard barrels |
| Section 241.2 | Application of tolerance for ``distance between heads |
| Section 241.3 | Application of tolerance for ``diameter of head |
| Section 241.4 | Standard dimensions |
| Section 241.5 | Classes of barrels for tolerance application |
| Section 241.6 | Tolerances to be allowed |
| Section 241.7 | Type of fellowships |