| Year | 1941 |
| Date | 25-Sep |
| Volume | 85 |
| Issue | 2,107 |
| Page | 251 |
| Category | Workshop |
| Part | |
| Title | Modifications to a Milling Attachment |
| Author | Ian Bradley |
| Notes | Sketch showing method of mounting crown wheel and adaptor, useful parts, close-up, the complete rig, some of the work turned out - gear-wheels for "1831", general arrangement of back-gear, direct-drive locking device, a back gear |