| Year | 2021 |
| Date | 16-Jul |
| Volume | 227 |
| Issue | 4,669 |
| Page | 144 |
| Category | Horology |
| Part | 7 |
| Title | An Astronomical Bracket Clock |
| Author | Adrian Garner |
| Notes | Makes a bracket clock showing both mean and sidereal time. Wheels, crossing out of wheels, the remontoire, wheel collets, references |