| Year | 1944 |
| Date | 17-Aug |
| Volume | 91 |
| Issue | 2,258 |
| Page | 157 |
| Category | Lathe |
| Part | |
| Title | A Micrometer Index for a 1/8-in. Lead-Screw |
| Author | F.H.Harmsworth |
| Notes | Graduated index assembled on a 3 1/2" Exe lathe (photo by J.N.Maskelyne), frame for dividing gear, micrometer sleeve |