Catalogue of Optical Projection Apparatus. (September 1938)

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OPTICAL LANTERNS, ETC. New Travelling Box Attache Pattern. This is made similar to an attache case, and in two sizes. It is thoroughly well made, and lined felt throughout j leather handle bolted through to iron plate inside, and three safety hooks. 1793 Small size, to carry \20 slides ... ... ... £| 5 Q 1794 Large size, to carry \60 slides ... ... ... £| |2 0 Fibre Boxes These are vulcanized fibre boxes, protected at the corners and lined with thick felt, into which the slides are either packed direct’ or enclosed in a 3-ply wood box, which is in turn enclosed in the outer fibre container. Recent experiments have been made with regard to the transit of slides, and we find this method gives by far the best protection. NEWTON & CO., 72 WIGMORE STREET, LONDON, W.l 29