Biunial lantern slide projector

c.1900 in Manchester

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Science Museum Group Collection
© The Board of Trustees of the Science Museum

Biunial (two-tier) lantern slide projector with five lens tubes and two lenses, made by J. A. Furnivel, Manchester, c.1890. Originally lit by gas with special mixing valve. One projector sits on top of the other. Screw adjusters on both projectors to focus the beams together.

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Science and Industry Museum: 1830 Warehouse

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