| Year | 1964 |
| Date | 01-Sep |
| Volume | 130 |
| Issue | 3,256 |
| Page | 623 |
| Category | Workshop |
| Part | |
| Title | Seal That Piston with an 0-Ring (Discovering O Rings) |
| Author | Arnold Throp |
| Notes | A device that ought to be more generally used by constructors of small railway engines. For gauge glasses |