| Year | 1941 |
| Date | 27-Mar |
| Volume | 84 |
| Issue | 2,081 |
| Page | 252 |
| Category | Lathe |
| Part | |
| Title | A Screwcutting Difficulty Explained |
| Author | Geo. Gentry |
| Notes | Cutting both Metric and English Threads on a Metric screw-cutting lathe. A reply, cutting metric threads on a metric lathe, producing metric pitches on English lathes, cutting English threads on a metric lathe |