| Year | 1949 |
| Date | 13-Oct |
| Volume | 101 |
| Issue | 2,525 |
| Page | 469 |
| Category | Electrical |
| Part | |
| Title | Voltmeters, Ammeters and Ohmmeters (Multi-meter) |
| Author | A.R.Turpin |
| Notes | Home-made multi-range voltmeter, ohmmeter and ammeter, dial plate, circuit diagrams, actual scale plotted against basic scale, "beam track indicator", ohmmeter scale, correct pattern, wrong pattern |