McVitie Weston valve collection, X-Ray tube, cold cathode valve
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Science Museum Group
© The Board of Trustees of the Science Museum
X-Ray tube, cold cathode valve, spherical 5in diam, with neck 1.25in diam x 5in long carrying concave cathode and side evacuating pip, opposed neck 0.5in diam x 2in long carrying inclined central target anode, and oblique neck 0.5diam x 2in long carrying additional anode, (RMW/P4 - McVitie Weston number), by Unknown maker.
