| Year | 1921 |
| Date | 21-Jul |
| Volume | 45 |
| Issue | 1,056 |
| Page | 49 |
| Category | Lathe |
| Part | |
| Title | Fitting a Lathe Clasp Nut |
| Author | H.V.N. |
| Notes | Ascertaining the degree of out-of-alignment of lead screw with bed, method used for making a new half-nut, design & fitting, marking out, lined up |