Projection engineering (Jan-Dec 1931)

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Page 30 PROJECTION ENGINEERING F. S. C. GENUINE OPTICAL CROWN GLASS PLATES Enclose all Portholes for Sound Films and Shut Out the Disturbing Noise of the Projection Booth. No Distortion No Loss of Light FISH-SCHURMAN CORPORATION 45 West 45th Street NEW YORK CITY Portable Sound Distribution Equipment For schools and colleges, churches, lodges, parks, airports, etc. Output sufficient for two dynamic speakers at heavy volume. Completely equipped with meters and controls. Padlocked against tampering. Dealers can rent this equipment profitably. 20" high, \2>Y\" wide, 12J4" deep. Complete with microphone and speaker — $350.00. Write for illustrated folder. FERRANTI, Inc. «*•.«£& BUILT SOUND We build splicers to your specified requirements— for sound film, wide film, 35mm or 16mm film. Our splicers, both standard and custom-made, are giving sturdy, dependable service in theatres and exchanges throughout the world. Send for literature GRISWOLD MACHINE WORKS Port Jefferson New York %JV» " HAN Dl -MIKE" ,a ** X* MOST EFFICIENT GENERAL 1L™. single button microphone. 200 ohm Primary. 100.000 ohm on secondary side. List price $5. UTILITY MICROPHONE KNOWN List I O Complete The truly perfected single button hand microphone.Two models, "Regular" and "Special Home Recording." Scientifically damped diaphragm, gold plated button, toggle switch, 15-foot cord. Finished bronze or gunmetah Dealers, write for our "direct deal." Get our complete catalog. UNIVERSAL MICROPHONE CO., Ltd. 1163 Hyde Path Blvd. INGLEWOOD, CALIF. Microphones $5 to $?50. Also cable ers, mountings transformstands, etc. Expert microphone repairs. ] ,»-,, **-~2^*>^»m*m*k BEST CARBON SAVER for Low Intensity Arcs Permits projectionist to get at least one more reel from each set of stubs. Made in 7, 8, 9, 10, 12 and 13 mm. sizes. $2.50 each at your dealer. BEST DEVICES CO. 2108 PAYNE AVE. CLEVELAND, OHIO 1 W* offer to manufac* turers interested in. EXPORT the services of a dependable organization, well established in the entire foreign field AD. AUMEMA, Inc. Manufacturers' Export Managers 116 Broad Street, New York, N. Y. INDEX TO ADVERTISERS A Ad. Auriema, Inc 30 American Radio Hardware Co.... 31 Amplion Corp. of America 5 B Bausch & Lomb Optical Co 25 Bass Camera Co 31 Bell Equipment Corp Second Cover Best Devices Co 30 Blue Seal Sound Devices, Inc 29 Cameron Publishing Co 32 Chicago Gear Works 31 Joseph Clayton 29 D DeJur-Amsco Corp 25 Ellis Electrical Laboratory 31 F Fish-Schurman Corp 30 Ferranti, Inc 30 Forest Electric Corp 27, 29 G General Radio Co 27 Griswold Machine Works 30 H Hoffman-Soons 27 Int'l. Broadcasting Equipment Co.. 3 Int'l. Projector Corp 6 N National Carbon Co., Inc 1 R Racon Electrical Co., Inc... .Third Cover S Samson Electric Co Fourth Cover SOS Corporation 31 U Universal Microphone Co., Ltd .... 30 W Weber Machine Corp 29