| Year | 1919 |
| Date | 04-Dec |
| Volume | 41 |
| Issue | 971 |
| Page | 505 |
| Category | Optical |
| Part | |
| Title | A Model 60-Centimetre Searchlight |
| Author | Fred Poulton |
| Notes | Two views of anti aircraft searchlight, method of making, details of construction, sectional view showing general arrangement, prototype by Messrs Lyon and Wrench, details |