| Year | 1910 |
| Date | 06-Oct |
| Volume | 23 |
| Issue | 493 |
| Page | 313 |
| Category | Lessons from the Laboratory |
| Part | |
| Title | A Former Wound Armature: Extension to Core |
| Author | |
| Notes | Gear used in building former wound armature, spool used for winding coils, armature core & spindle ready for windings, hardwood extension pieces, application of clock-maker's drill-turn |