The educational screen (c1922-c1956])

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Page 368 The Educational Screen Looking Forward Wartime achievements in science are developing an era of progress wliich challenges the imagination. All that Spencer is doing now—pro- ducing microscopes, Delineascopes, per- iscopes, telescopes, aircraft and anti- aircraft gunsights, prism binoculars, azimuth instruments for directing artil- lery fire, tank sights, telescopic alidades for navigation, projectors for instruc- tion— will reap peacetime rewards in advanced knowledge, better manufac- turing techniques, finer instruments. At the war's end, Spencer will be ready to serve scientific and educational needs on a far broader scale than ever before. Spencer 1 BUFFALO. LENS COMPANY BUFFALO, NEW YORK SCIENTIFIC INSTRUMENT DIVISION OF AMERICAN OPTICAL COMPANY