Professor Drumonds Polarising Projection Slides,
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English, c.1890, unsigned, consisting of a geared slide holder in polished mahogany with a sprung clip to hold the circular disks, which include a geometric star, a geometric design, and a piece of quill with a note that reads '1890 Professor Drumond London University Special Large Selenite Star plus rotary holder total £1-10-6, a very fine slide of a thin section of translucent and iridescent Labradorite in a polished mahogany frame, a geometric star in a polished mahogany frame, a piece of Quartz in a Polished mahogany frame, a slide to demonstrate Newtons Rings, a small frame marked 'Calc Spa' Footnote: although unsigned these slides are similar in size and construction to the ones discussed in Lewis Wrights book 'Optical Projection, printed in 1890
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Professor Drumonds Polarising Projection Slides,
Estimate £300 - £500
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Item located in Thatcham, Hampshire, ukOffers In-House Shipping
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