Projection engineering (Jan-Dec 1931)

Page scan 000180 from Projection engineering

Record Details:

Title:
Projection engineering
Date:
Jan-Dec 1931
Publisher:
New York : Bryan Davis Publishing Co., Inc.
Volume:
Projection engineering (Jan-Dec 1931)
Leaf #:
000180
Language:
English
Collection:
Technical Journals
Format:
Periodicals
Contributor:
Library of Congress, MBRS, Moving Image Section
Sponsor:
Library of Congress, Motion Picture, Broadcasting and Recorded Sound Division
Coordinator:
Media History Digital Library
Date Added:
July 04, 2024
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Page 28 PROJECTION ENGINEERING Sound Controls amaQ P?P© ■Q-ok F""©' ■ uifmmOl J?™"^ SPECIFY CLAROSTAT— Whether you need simple potentiometer Volume Controls or Dual and Triple Units for Constant Impedance work — Clarostat makes all types to suit the exacting needs of the sound industry. Absolutely quiet, long lived units with special alloy contactor and windings to avoid thermal e.m.f. Insulated or Grounded Shaft and Bushing as desired. New model Graphite Element Potentiometers for use where extra high resistances are required. With the revolutionary, Geared Roller Contact for long life and silent operation. Rely upon resistor specialists — Specify Clarostat ! Write for literature — mentioning this magazine Clarostat Mfg. Co., Inc. 285 North 6th St. Brooklyn, N. Y. If ♦ ♦ ♦ your apparatus (.ACTUAL-SIZE,) is built for quality and performance, consider .... Type BWE Accuracy to .1 of 1%. Low distributed capacity. Non-inductive. JRfcblb H Electrically noiseless. All standard values in stock Ranges from .1 ohm to f 100 megohms. THE DAVEN COMPANY RESISTOR SPECIALISTS General Office and Factory 158-160 Summit Street, Newark, N. J. L R. E. Convention Booth Number 150 Projection Engineering inmiiii R. M. A. Convention Booth Number 121