| Year | 1926 |
| Date | 22-Apr |
| Volume | 54 |
| Issue | 1,304 |
| Page | 435 |
| Category | Light Engineering Equipment and Supplies |
| Part | |
| Title | Electrical Measuring Instruments (Albert White) |
| Author | |
| Notes | Some moving coil volt and ammeters, volt and ammeters of the directional moving-magnet types, moving iron voltmeter |