Catalogue of Optical Projection Apparatus. (September 1938)

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OPTICAL LANTERNS, ETC. 1749 Screens as above, hut fitted in Wooden Cases, so constructed with pulleys and cords that the Screen rolls up into the box for protection. 6ft. £4 8 0 lOft. £7 15 0 I6ft. ... £18 14 0 7ft. ... £5 4 6 I2ft. ... £10 (4 6 18 //. ... 8ft. ... £5 19 0 14//. ... £14 6 6 20ft. ... 9ft. ... £6 17 6 l752 White Opaque Screens on Spring Roller, in box with side supports. These Screens may be stood upon the floor or table and need no separate support at the top. 3/1 £3 16 6 5ft £5 17 0 4/1 £4 18 0 6ft £6 0 0 Transparent Roller Screens 1750 Transparent Screens for back projection, mounted on roller and batten. 6/1 £3 6 0 9ft. ... ... £7 19 6 8/1 £6 6 6 10 //. ... £|| 0 0 These Screens are made to order only. Delivery takes about ten days. Lecturers' Reading Lamps No. l 831 l831 Electric Reading Lamp, for use with standard 25-watt lamp. Gives good directional illumination for reading, well shielded from the screen. Complete with 12//. flexible wire, plug, and red signal {lamp extra)... ... ... ... £0 12 6 NEWTON & CO., 72 WIGMORE STREET, LONDON, W.l 27