| Year | 1934 |
| Date | 19-Apr |
| Volume | 70 |
| Issue | 1,719 |
| Page | 375 |
| Category | Workshop Topics |
| Part | |
| Title | Setting out a Tumbler Reverse Gear |
| Author | "M" |
| Notes | General arrangement, method of checking teeth of existing pinion, dimensions of existing housing bracket, method of obtaining leading dimensions of housing bracket, setting out of gear |