| Year | 1942 |
| Date | 01-Oct |
| Volume | 87 |
| Issue | 2,160 |
| Page | 320 |
| Category | Locomotive |
| Part | |
| Title | 1831. A 3 1/2in. Gauge I.C. Engine-driven Locomotive |
| Author | Edgar T.Westbury |
| Notes | Cutting the transmission worm gearing. Cutter bar and fly-cutter, worm wheel in course of being cut, generating the worm wheel, another view |