| Year | 1943 |
| Date | 30-Sep |
| Volume | 89 |
| Issue | 2,212 |
| Page | 319 |
| Category | Workshop |
| Part | 3 |
| Title | How to Make a Micrometer |
| Author | "Ned" |
| Notes | Machining the screw. Form of tool recommended for fine internal screwcutting, cutting the internal thread, cutting the external thread, details of micrometer sleeve, don't use a die! Micrometer screw, lapping |