MENISCUS
| Date | Clue |
|---|---|
| 2007-09-07 | Concavo-convex lens |
| 2006-10-06 | Crescent |
| 2003-09-21 | Crescent-shaped section of a lens |
| 1998-06-12 | Lens with a crescent-shaped section |
| Date | Clue |
|---|---|
| 2007-09-07 | Concavo-convex lens |
| 2006-10-06 | Crescent |
| 2003-09-21 | Crescent-shaped section of a lens |
| 1998-06-12 | Lens with a crescent-shaped section |