| Year | 1994 |
| Date | 04-Feb |
| Volume | 172 |
| Issue | 3,962 |
| Page | 145 |
| Category | Horology |
| Part | 4 |
| Title | Replica Arnstad Cross-beat Clock |
| Author | Douglas Follett |
| Notes | 'Scape wheel tooth profile. Impulse angle, Meccano model, carriage and verges, foliot arms, meshing gears |