| Year | 2021 |
| Date | 13-Aug |
| Volume | 227 |
| Issue | 4,671 |
| Page | 284 |
| Category | Horology |
| Part | 9 |
| Title | An Astronomical Bracket Clock |
| Author | Adrian Garner |
| Notes | Makes a bracket clock showing both mean and sidereal time. Cocks, bridges, moon work, solar work, references |