| Year | 1950 |
| Date | 04-May |
| Volume | 102 |
| Issue | 2,554 |
| Page | 625 |
| Category | In The Workshop |
| Part | 62 |
| Title | Compressed air Supply for the Workshop |
| Author | "Duplex" |
| Notes | Modifications to the original design, the air vessel, the safety valve, machining parts for the blower, the casing, end covers, bearing bushes, mounting the blower unit, operating the blower |