| Year | 1940 |
| Date | 22-Feb |
| Volume | 82 |
| Issue | 2,024 |
| Page | 200 |
| Category | Electrical |
| Part | 2 |
| Title | Electrical Measuring Instruments. Ammeters and Voltmeters |
| Author | H.Chapman Pincher |
| Notes | Circuit showing insertion of ammeter and voltmeter, the iron-vane type of moving magnet ammeter, the hot wire ammeter |