| Year | 1927 |
| Date | 01-Sep |
| Volume | 57 |
| Issue | 1,373 |
| Page | 202 |
| Category | Workshop |
| Part | |
| Title | The Metr - Inch Micrometer |
| Author | |
| Notes | Messrs Madison and St. Jervais. Enlarged view of sleeve and thimble scales, relative positions of sleeve indices and thimble scales |