| Year | 1931 |
| Date | 24-Dec |
| Volume | 65 |
| Issue | 1,598 |
| Page | 616 |
| Category | Workshop |
| Part | |
| Title | Some Complex Turning Appliances |
| Author | Geo. Gentry |
| Notes | Rose-engine-turning rest and some examples of its work, double protractor tool holder with cross-slide for grinding tools to correct clearances and angles |