Educational screen & audio-visual guide (c1956-1971])

are made by the Ozalid process in seconds directly from translucent originals. Ozachrome Viewfoils are used in overhead projectors for conveying large, clear, multi-color images onto screens and walls. The new brilliant hues enable instructors to dramatically illustrate points under discussion while facing and retaining control over their students. EMC Tape Player The EMC Recordings Corporation offers a low-priced tape playback machine—small, light in weight, and simple to operate. In schools it is now possible in many cases to equip every classroom with its own tape player. In churches and other organizations the playback can easily be used wherever it is needed. For detailed information, write EMC Recordings Corporation, 806 E. 7th St., St. Paul 6, Minnesota. Recorder on Wheels Writing reports — the bane oi existence for traveling supervisors, rural superintendents, and other "educators on the move" — may be greatly simplified and in some cases eliminated altogether by today's electronics. An "inverter" now available delivers 110-volt alternating current sufficient to run tape or wire recorders drawing on the six-volt or I2-volt automobile battery. It is readily mounted in the automobile either under the dashboard or in one corner of the trunk, weighs as little as 19 pounds, and measures less than 9" square by BVi" high. Thus far used mainly by salesmen and roving reporters, the device promises extension of the usefulness of the school tape recorder by making it mobile. While impressions are still fresh in the minds of the traveling educator, they can be recorded in the privacy of his car. A school journey by bus may well be made more meaningful if students' impressions are recorded while the trip proceeds — for review later in classroom sessions. The inverter described is made by the .\merican Television and Radio Co., 300 E. Fourth St., St. Paul 1, Minnesota. Double-Play Tape A new magnetic recording tape that will double the playing time over standard recording tape has been announced by Orradio Industries, manufacturers of Irish Brand Magnetic Recording Tape. The new tape will be known as Irish Double-Play Recording Tape, No. 7-2400. The new double-play tape gets 100 percent increase in playing time by 2400 ft. instead of 1200 ft. of tape on a 7-inch reel. This is made possible by the use of .5 mil Mylar, the new DuPont film, said to be the strongest film yet developed for magnetic tape. For further information, write Orradio Industries, Shamrock Circle, Opelika, Alabama. RCA Electronic Trainers The Government Department of RC.\ Service Company, Inc., Camden, N. J., has announced the availability of RCA Electronic Trainers for use in schools and technical institutes. This New filmstrips from the POPULAR SCIENCE LIBRARY HOW TO WRITE plus Teaching Guide Series $32.50 Individual Filmstrips $6.00 each A BETTER YOU plus Teaching Guide Series $32.50 Individual Filmstrips $6.00 each For further information write to TEXT-FILM DEPT. • McGRAW-HILL BOOK CO. • 330 W. 42 ST. • N. Y. 36 versatile device has been successfully utilized by the Military for training their personnel in electronics maintenance. The forerunner of this latest device was the first effective and widely used trainer, the RCA Dynamic Demonstrator, incorporated in electronics programs in 1937. The new RC.\ Dynamic Electronics Trainers provide equipment for classroom use, RCA Model 161 Instructors Demonstrator, and for student practice, RC,\ Model 121 Student Laboratory Set. They have been specifically designed to simplify electronics training. Argus School Camera Kit .\rgus Cameras, Inc. has embarked on a program to aid photography programs in high schools. Hundreds of high schools have signed up to receive an ".\rgus School Camera Kit" and helpful photographic advice from the newly created Educational Services Di\ision of Argus Cameras, Inc. Additional information on the new Argus program is available by writing: Educational Services Division, Argus Cameras, Inc., .\nn Arbor, Michigan. Add-a-Drawer A new method of setting up and administering a filmstrip filing system, using the add-a-drawer idea, has been announced by Bradford Products Co., North Chicago, Illinois. The system makes it possible for the smallest to the largest filmstrip library to have its own organized filmstrip library. The small library needs only one drawer, called the Starting Unit, for a capacity of 90 filmstrips. When more filmstrips are acquired, second, third, and more drawers are added as needed. They lock-stack one on an^ other indefinitely, regardless of the size of the library. Activities Divider An unusual new flexible activities divider and display unit is now avail-l able for schoolrooms. It is an offshoot of Struc-Tube, the exhibition and partition framework designed by architect George Nelson. It is an integral part of the model audio-\isual classroom at New YorkI Lfniversity. The members are lightweight and simple enough to be erected or moved by children. Partitioning or display panels of any materials, sizes or shape; may be used with it. Shelves, cabinets shadow boxes or projection screen? may be attached. For additional information write Struc-Tube Division, Affiliated Ma chine &: Tool Co., 260 AV'cst St., New York 13, N. Y. 394 Educational Screen