| Year | 1930 |
| Date | 25-Sep |
| Volume | 63 |
| Issue | 1,533 |
| Page | 307 |
| Category | Workshop |
| Part | |
| Title | A Small Self-Contained Countershaft and Grinder |
| Author | H.Dyer |
| Notes | Perspective sketch of built-up grinder, general rig-up of countershaft on beam, details of countershaft, of grinder |