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Text Only Records
(Preceded by: records with image previews)
17. Lane Electrometer on Leyden Jar, by George Adams Jnr, London,...
| 18. Focimeter, by Hamblin, London, Mid-20th Century
| 19. Large Rotary Converter, by Electric Construction Company, English,...
| 20. Stud Field Regulating Rheostat, by Electric Construction Company,...
| 21. Stud Motor Starter, by Electric Construction Company, English,...
| 22. Magnetic Key Relay, by Marconi Company, London, Early 20th...
| 23. Large Main Condenser With Case, by Marconi Company, London,...
| 24. Radio Call Sign, Early 20th Century
| 25. Medical Geissler Tube, English?, c. 1880
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