| Year | 1957 |
| Date | 16-May |
| Volume | 116 |
| Issue | 2,921 |
| Page | 725 |
| Category | Competition |
| Part | |
| Title | C.A.V. apprentices do well in competition |
| Author | |
| Notes | London Association of Engineers Junior Challenge Shield. compound sine table by W.Hambleton, J.E.Stollery's plane crystal spectograph |