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1. Compound Microscope with Accessories and Case, Possibly by... 2. Altazimuth Theodolite, by Benjamin Cole, London, c. 1750 3. HP-25 Pocket Electronic Calculator, by Hewlett Packard, Singapore,... 4. Telefunken Radio Valve Type LD15 and Carton, by Telefunken,... 5. Rotating Multiple Stamp Holder and Stamp, by E.M.R., London,... 6. Speedometer and Odometer,with accessories by Elliott Brothers,... 7. Marconi Ladies' Silver Pocket Scent Bottle and Stopper, by... 8. Graduated Swivelling Coils For Triple Crystal Detector, Early... 9. Jet Plates and Needles for Penicillin Extraction 10. Sector, by William Elliott, London, 1830s or 1840s 11. Stereoscopic Events Cameras for Particle Physics, by W. T.... 12. Culpeper Type Compound Microscope in Case 13. Drum Microscope with Accessories and Case, English, c. 1840 14. Simple Microscope, English, c. 1835 15. Simple Microscope with Case and Accessories, by Charles Chevalier,... 16. Rubber Tubing from Marey's Tambours or Sphygmograph 17. Aural Tourniquet Capstan, by Savigny, c. 1800 18. 12 Volt Fleming Valve, by Ediswan, London, c. 1905 19. Marconi Radio Valve Type MT1, by Marconi Company, London, Early... 20. Giant Radio Valve, by GEC, English, 1910s 21. 4 Volt Fleming Valve, by Royal Ediswan, London, c. 1905 22. Manually Regulated Arc Light and Case, by Samuel Highley, London,... 23. Brass Nameplate of Sir Henry Acland, ?1840s 24. Winding key 25. Brass and Pewter Hydraulic Machine, Early 19th Century