| Year | 1947 |
| Date | 06-Mar |
| Volume | 96 |
| Issue | 2,389 |
| Page | 253 |
| Category | Smoke Rings |
| Part | |
| Title | Our Cover Picture (The milling of an undercut slot) |
| Author | Percival Marshall |
| Notes | A machining operation in the workshop of our contributor "Ned", see 82 2034 437, 2036 480, 2037 506, 2038 519, 2039 544, 2040 562 and 83 2042 20 |