| Year | 1930 |
| Date | 09-Oct |
| Volume | 63 |
| Issue | 1,535 |
| Page | 347 |
| Category | Electrical |
| Part | |
| Title | Electric Flashers |
| Author | A.H.Avery |
| Notes | Showing action of heat on thermostatic metal, temperature deflection curves of "Varinar" strip of different thicknesses, comparison of "warp" between nickel-steel and brass-steel thermostatic metal, flasher circuit |