| Year | 1915 |
| Date | 01-Apr |
| Volume | 32 |
| Issue | 727 |
| Page | 257 |
| Category | Electrical |
| Part | |
| Title | A 20-Cell Electro-Medical Constant-Current Battery |
| Author | G.Gentry |
| Notes | Edelmann's milli-amperemeter fitted to the battery, the galvanometer, early type of medical galvanometer, diagram of arrangement of galvo, milliamperemeter in wood case fitted with one shunt, simple milli-ampermeter taken apart |