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OCTOBER, 1931
Page 25
One Glance Will Convince Any Engineer of the Superior Construction of a
GATES ADDRESS SYSTEM
Gates Engineers have been designing and building speech input equipment for ten years. The fact that approximately 150 Radio Broadcast Stations — 15 universities and colleges as well as many theatres, recording laboratories, army cantonments and government institutions are using Gates Equipment is a real assurance of the approval of the best engineers for dependability and quality.
Send for Bulletin No. 25 today.
GATES RADIO & SUPPLY CO.
Manufacturing Engineers
Quincy, Illinois
MODEL PA 701
A portable all A.C. operated address system with a 4-stage
Hi-gain circuit with UX 250 push-pull output —
Price $290.00.
for all sound installations!
PORTABLE and PERMANENT FIREPROOF PROJECTION ROOMS
THESE booths are made of '/j" thick transite with angle iron M/4" x H/4" x 3/16". The panels are interchangeable and bolted together with stove bolts. The seams are filled with transite cement. The floor sheets are %" thick asbestos.
The Underwriters throughout the country have approved these booths, as well as the fire and building departments of many cities.
Special booths built to conform with the Rules and Regulations of
the Steamship Inspection Service on United States Shipping Lines.
Soundproof booths on rollers for microphone
announcements from back-stage our latest specialty.
Write for Catalog of Blue Seal Products
Both Portable and Permanent Type Projection and Transmitting Booths
STANDARD SIZES
4' x 6'-3" x 7'1 1/2" high
6'-3" x 8' x 7'1 1/2" high
8'-3" x 9' x 7'-|l/2" high
9'-3" x 12' x 7'1 1/2" high
9'-3" x 14' x 7'1 1/2" high
BLUE SEAL PRODUCTS CO.,
INC. MANUFACTURERS OF MOTION PICTURE ACCESSORIES SINCE 1913 Also Distributor for Johns-Manville Asbestos Products
260 Wyckoff Street
Brooklyn, N. Y.