| Year | 1920 |
| Date | 28-Oct |
| Volume | 43 |
| Issue | 1,018 |
| Page | 349 |
| Category | Workshop |
| Part | |
| Title | Some Modern Machine and Hand Tools |
| Author | Geo. Gentry |
| Notes | High-class 4-in. precision lathe, registering or indicating caliper, portable grinding outfit. "Hjorth" set up for screwcutting, with screw & lever tailstock, spring-controlled indicating caliper, "Dumore" tool post grinder |