Early design of Solenoid Focusing Mount for a type N 1013 Travelling Wave Tube Early design of Solenoid Focusing Mount
Miniature opera glass in ivory with brass mount; pierced for Stanhope lenses. Opera glass' mount for microphotograph
Mount; 140x420mm; shot-silk material covered (red); plush front; apertures for photographs: 2 circular 60mm diameter, 1 ovl 80x120mm. Plush hanging mount for photographs
Paper mount supporting two palladium foils from Michael Faraday's chemical chest, England, 1820. Paper mount supporting two palladium foils 1820