| Year | 1948 |
| Date | 08-Apr |
| Volume | 98 |
| Issue | 2,446 |
| Page | 381 |
| Category | In The Workshop |
| Part | 8 |
| Title | Index Collars |
| Author | "Duplex" |
| Notes | Fitting index collars, the cross-slide index, the top-slide index, the lead-screw index, making index collars, graduating the index |