| Year | 1935 |
| Date | 05-Dec |
| Volume | 73 |
| Issue | 1,804 |
| Page | 536 |
| Category | Educational |
| Part | |
| Title | First Steps in Model Engineering. Workshop Advice, Experience and Philosophy for Readers of all Ages |
| Author | "Inchometer" |
| Notes | Effect of out of centre drill grinding, explanatory drawings to illustrate the effect of grinding a drill out of centre, no age limit for inventing, risk if electric shock in home workshops, safety measures |