| Year | 1940 |
| Date | 08-Feb |
| Volume | 82 |
| Issue | 2,022 |
| Page | 138 |
| Category | Electrical |
| Part | 1 |
| Title | Electrical Measuring Instruments. Galvanometers |
| Author | H.Chapman Pincher |
| Notes | The principle of the tangent galvanometer, the scale, astatic couple, moving coil galvanometer |