| Year | 2021 |
| Date | 21-May |
| Volume | 226 |
| Issue | 4,665 |
| Page | 702 |
| Category | Horology |
| Part | 3 |
| Title | An Astronomical Bracket Clock |
| Author | Adrian Garner |
| Notes | Makes a bracket clock showing both mean and sidereal time. Design approach, construction, clock mock-up, reference |