| Year | 1986 |
| Date | 18-Jul |
| Volume | 157 |
| Issue | 3,781 |
| Page | 96 |
| Category | Historic |
| Part | |
| Title | Ancient Gearing |
| Author | Gerry Penrose (Canada) |
| Notes | Some thoughts on the technologies involved. Antikythera, mysteries, gear generation, Byzantine Sundial-calendar, conclusions |