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Page 60
Projection Engineering, September, 1929
PHOTOELECTRIC CELLS
TELEVISION — TALKING PICTURES — RESEARCH
VISITRON PHOTOELECTRIC CELLS are standard with most manufacturers of sound-on-film equipment. Since 1925 G-M VISITRON cells of the alkali metal hydride type have been used for talking Moving Pictures, Television and hundreds of investigational projects. Specialization on the problem of developing a superior photoelectric cell of highest sensitivity, instantaneous response and long life has resulted in a product which has met with universal acceptance by leading engineers in the field of sound projection.
For Quality in Reproduction Specify "G-M VISITRON"
LABORATORIES
1801 Grace Street
Chicago, 111.
A New Air Column Speaker Made Along Entirely Different Lines — Getting Away From Antiquated Concepts and Methods
LOUD... CLEAR... LIFE-LIKE that's MILES
New Heights of reproducing Power and Realism, based on years of intensive research and development.
Performance that has won leading manufacturers of SYNCHRONOUS, NON-SYNCHRONOUS and PUBLIC ADDRESS EQUIPMENT . . . that will win YOU by a single trial.
Write for our various type speakers for every occasion.
MILES MANUFACTURING CORP.
"Builders of Acoustical reproducers since 1923"
31 West 21st Street, New York, U.S.A.
Telephone GRAmercy 5081. Cable Address: "Milesman"— N. Y.
HOTEL
APlUAWASUIrSTTin
ATLANTIC AVE. AND EIGHTH ST.
VIRGINIA BETACU VA.
Fireproof brick construction. The coolest spot on the beach. Invigorating breezes from ocean on East and Lake Holly on West.
Bright, airy outside rooms, parlor suites and apartments, private baths, superior cuisine — Surf bathing, riding, fishing, golf, dancing, private tennis court and children's playground.
J. WESLEY GARDNER, Manager
Bfc£*£
NEWS!
Manufacturers, Engineers — Kindly keep Projection Engineering informed of the NEWS of your organization. Notices of changes in executive and engineering personnel, removals, expansions, new products, etc., are carried each month in the various departments of the magazine. Be sure that Your activities are adequately reported.