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MAY, 1931
Page 27
DIRECT READING
TYPE 586 Power-Level Indicator
An open clearly marked decibel scale makes the General Radio TYPE 586 Power-Level Indicator a truly direct-reading instrument. The time saved and the freedom from costly mistakes such a scale insures are advantages readily appreciated by the monitoring operator in the broadcast and recording studio.
If you are not familiar with this instrument, a request on your business letterhead will bring you a catalog description. Please ask for Bulletin 932-P.
GENERAL RADIO COMPANY
Offices
CAMBRIDGE A,
Laboratories Factory
MASSACHUSETTS
HoffmannSoons
PERFECTION ^
LAN. NEW YORK, CONTINENTAL your dealer.
ONE OF THE PIONEERS
The motion picture industry is a strong chain composed of many links. Each link represents a branch and is the result of years' experimental and research work put forth by pioneers in this great industry. HOFFMANN-SOONS is one of the links that forms this chain and has played an important part in the building up of this enormous institution.
THE OXL? UNION MADE RHEOSTAT
Recognized as the Highest Standard everywhere.
Now equipped with solderless, adjustable lugs to take wire sizes from No. 4 to 4/0 without any additional cost.
We build rheostats for special requirements. Communicate with us Direct. There is no obligation. Sold by all Branches of NATIONAL THEATRE SUPPLY CO.. SAM KAPTHEATRE ACCESSORIES, and by
HOFFMANN-SOONS
Electrical and Engineering Corporation 387 First Avenue, New York
Contracting Electrical Engineers — Moving Picture Theatre Electrical Specialists
RHEOSTATS
FOREST
RECTIFIERS
Forest Rectifiers are designed and constructed to meet the need for dependable rectification equipment. They are silent, and may be operated in the projection booth with sound apparatus.
The Forest M.P. 25-25 Rectifier, illus/ trated above, supplies steady, direct current of from 15 to 25 amperes to two projectors continuously.
All Types of Rectifiers in 15 amps., 25-25 amps., 30, and 65 amps., Sizes
Write Today for Literature!
Forest Electric Corp.
New and Wilsey Sts., Newark, N. J.