| Year | 1903 |
| Date | 28-May |
| Volume | 8 |
| Issue | 109 |
| Page | 518 |
| Category | Electrical |
| Part | |
| Title | The Amateur Electrician: What Shall he Make? |
| Author | G.H.Rooke |
| Notes | 4. Tangential Galvanometer. 5. An Astatic Galvanometer. 6. Current Reverser. 7. Resistance Board. 8. Wheatstone Bridge |