| Year | 1954 |
| Date | 25-Nov |
| Volume | 111 |
| Issue | 2,792 |
| Page | 624 |
| Category | In the Workshop |
| Part | |
| Title | Constructing a Small Compressor Unit |
| Author | "Duplex" |
| Notes | The motor mounting. the built-up bed, the air cylinder, the safety-valve, the pipe unions and connections, the air cylinder mountings, lubrication |