Catalogue of Optical Projection Apparatus. (September 1938)

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OPTICAL LANTERNS, ETC. The " Institution " Lantern, No. 1 No . LlOO As the name indicates, this Lantern has been designed for the use of Institutions where the slides may not always be of standard type. The Lantern itself will accommodate slides SJin. X 3|in., 3Jin. X 4in., 3^in. X4iin., 9cm. X 12cm., in fact any size up to the largest of these dimensions. In addition to the large size Condenser required for the various size slides, it is also provided with an air-cooled stage. For the projection of colour process slides and in more trying conditions this can be amplified by means of a water tank. The large Arc Lamp provided enables dense slides to be projected with facility, and the range of Lenses allow the apparatus to be used in the largest halls, the brilliancy of the picture being secured by means of the Arc Lamp supplied, the slides being protected from damage by heat by the cooling arrangements. LlOO The “ Institution ” Long Range Lantern, complete with 6\in. diameter Condenser, 3in. diameter “ Wigmore ” Pro- jection Lens {any focus up to 30 inches). Interchangeable Slide Carrier for all size slides up to 9cm. X \2cm.. Metal Tilting Stand, the whole finished Black Enamel ... £75 0 0 NEWTON & CO., 72 WIGMORE STREET, LONDON, W.I 11