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Page 32
PROJECTION ENGINEERING
for all sound installations!
PORTABLE and PERMANENT FIREPROOF PROJECTION ROOMS
THESE booths are made of '/j" thick transite with angle iron M/4" x I l/j" 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.
Write for Catalog of Blue Seal Products
Both Portable and Permanent Type
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 7'1 l/j" 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.
INTERNATIONAL PORTABLE AMPLIFIER
Type 2-A
A portable amplifier designed primarily for broadcast and public address pick-up work. Input circuit accommodates two condenser transmitters or two carbon microphones. Push button controlled meters indicate plate and microphone current.
Type 2-A Amplifier including carrying case $235.00
With built-in Volume Indicator 265.00
Weight 45 lbs. Dimensions 20 x 14 '/z x 10 inches Prices net, F.O.B. Chicago
ilntprnattmtal Uroaiiniattng {Equipment (£n. 3112 WEST 51st ST., CHICAGO, ILL
Manufacturers of a complete line of speech input equipment
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Qood V^Qews!
SYNCROFILM MODELS SOUND HEAD
Model "J" sound heads are designed and built to comply with the requirements of the very small theatres, where low cost equipment is desirable.
Weber's Model "J" Syncrofilm sound heads are simple, sturdy, economical, and dependable, and are sold on the same guarantee basis as is the well-known standard Syncrofilm.
Two sound heads complete with photo cells, optical units, exciter lamps, high grade silent drives, and necessary attachments for projectors.
$275.00 per pair
Further Particulars on request
WEBER MACHINE CORP.
59 RUTTER ST., ROCHESTER, N. Y.
Export Dept. 15 Laight St., New York City
Cable, "Arlab," New York