Vacuum cleaners and a wringer

Spots in this room

1. The surgery above the great hall
2. The dentist's chair
3. Dentist's chair above the main hall
4. Standing apparatus and the transport hall
5. Gallery displays and hanging aircraft
6. Wall telephones and electrical apparatus
7. Microscopes and laboratory instruments
8. Telegraphs and electrical apparatus
9. Early radios and receivers
10. Gramophones and laboratory apparatus
11. Cinema projectors
12. Cameras and photographic equipment
13. Photographic enlargers
14. The photographic darkroom
15. Display case and studio lamps
16. Projectors and a film-processing machine
17. Reel projector and a television set
18. Projection screen and sound equipment
19. Hand tools and the telescope
20. Typewriters and the rocket
21. Cash registers and office machines
22. Computers and the great ring
23. A cabinet computer
24. An empty stretch of the gallery
25. Household appliances: cookers and water heaters
26. Water heaters and electric cookers
27. Washing machines, fans and irons
28. Vacuum cleaners and a wringer