| Clue | Source | Date |
|---|---|---|
| Ephemeral jacuzzi sight | Eugene Sheffer | 28 May 2021 |
| Contents of a carpenter's level | Newsday | 10 Dec 2017 |
| *Feature of a carpenter's level | New York Times | 17 May 2016 |
| Jacuzzi sight | ||
| Potential lifesaver for a drowning person | ||
| Champagne feature |