1. Look from left to right from top to bottom.
The rod in the middle does not exist.
2. How many, 7 or 10. Count at the top and then at the bottom.
3. Is the door open to inside or outside?
4. Round or square?
5. How many, 3 or 4?
6. Is this just one?
7. Rare construction.
8. The centre beam disappears, look from left to right
9. 2 or 3? NO I don't know how they work but I think I need new glasses!
Many thanks to Tim Colwill for my signature