| Year | 1954 |
| Date | 15-Apr |
| Volume | 110 |
| Issue | 2,760 |
| Page | 418 |
| Category | Drawing |
| Part | |
| Title | Instruments for Drawing Curves |
| Author | A.Smith |
| Notes | A cyclograph, a helicograph, the principle of the cycloidograph, the hyperbolagraph, drawing ellipses, an elliptical crank, trammel or ellipsograph |