| Year | 1912 |
| Date | 18-Apr |
| Volume | 26 |
| Issue | 573 |
| Page | 361 |
| Category | Lessons from the Laboratory |
| Part | |
| Title | Turning and Dividing a Division Plate |
| Author | |
| Notes | Copying division plate by means of gear-cutter, (lathe by Drummond; gear-cutter by Goodman, Bristol), elevation, section |