| Clue | Source | Date |
|---|---|---|
| Working models (4-3) | ||
| Full-scale working models for testing purposes (4-3) | ||
| Makeshift models (4-3) | ||
| Models make fun of highs | The Telegraph Cryptic | 23 Dec 2020 |
| Full-size dummy models | The Times Concise | 11 Jul 2018 |
| Some models | Universal | 19 Oct 2016 |
| Some models | ||
| Scale models | ||
| Layout sketches | ||
| Product demo models | ||
| Full-sized models | ||
| Scale models | ||
| Scale models | ||
| Scale models |