| Year | 1953 |
| Date | 26-Nov |
| Volume | 109 |
| Issue | 2,740 |
| Page | 635 |
| Category | In the Workshop |
| Part | |
| Title | Making a Circulating Pump |
| Author | "Duplex" |
| Notes | Building the pump, sectional drawing, pump body, packing gland and lubricator, cover plate and inlet port, the gland plate, cover plate, rotor and spindle |