| Year | 2007 |
| Date | 11-May |
| Volume | 198 |
| Issue | 4,299 |
| Page | 568 |
| Category | Horology |
| Part | 4 |
| Title | Magnetic Drive Clock |
| Author | Richard Stephen |
| Notes | Continues by depthing the wheels. Depthing tool, pin wheel ratchet, pillar, pendulum, base plate, bearing sleeves, dial and furnishings |