PLUMB
| Date | Clue |
|---|---|
| 2024-08-01 | Measure the depth of |
| 2023-11-12 | Downright |
| 2023-04-16 | Vertically level |
| 2019-02-24 | Get to the bottom of |
| 2009-02-27 | Downright |
| 2006-06-28 | Perfectly vertical |
| 2005-05-17 | Perpendicular |
| 2003-11-30 | Depth checker |
| 1999-05-15 | Downright |
| 1998-06-16 | Carpenter's gadget |