Catalogue of Optical Projection Apparatus. (September 1938)

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OPTICAL LANTERNS, ETC. l121 The “ Wigmore ” Junior Lantern, complete with 250-watt Lamp for lOO-volt current, Ain. Condenser and Double Achromatic Objective ... ... ... ... £618 6 EXTRAS. 100-WATT Resistance, enabling Lantern No. l120 to be used on any current from \0Q to 250 volts ... ... ... ... ... £1 10 0 250-watt Resistance, enabling Lantern No. l121 to be used on any current from \00 to 250 volts ... ... ... ... ... £1 10 O Double Sliding Carrier, for either model (included) Type A2 Lantern No. LlO This is the most inexpensive Lantern we can recommend for really serious work. Of new design, the instrument supersedes the “ Popular ” and A1 Models, which have been so well known for many years past, and it embodies the most important features of both the older models. The Body is of steel, finished in black enamel, and is of sufficient size to accommodate a high-power electric Projection Lamp up to 250 watts ) on the other hand. Limelight, Acetylene, or Oil Lamps can be fitted when electric current is not available. The Condenser is 4 inches in diameter, and the Objective, a double achromatic, is carried in a helical focusing mount. 110 The A2 Metal-Bodied Optical Lantern, as described above, fitted with 6in. or Sin. Focus Lens and Slide Carrier, without Illuminant £6 lO 6 111 Ditto, ditto, but fitted with \0in. or \2in. Lens and Extension Tube £7 lO 0 For Illuminants, see pages 18 to 22. NEWTON & CO., 72 WIGMORE STREET, LONDON, W.l 6