The educational screen (c1922-c1956])

Page 318 The Educational Screen Rolling tlie pencil between Ihe thumb and fingers as it is drawn along the straightedge will produce a line of uniform width; The MICROMETER and the VERNIER CALIPER are both highly accurate measuring instruments. The common ones measure to a thousandth of an inch. Those measuring to a tenth of a thousandth of an inch are coming more and more into use. i, Teaching Aids lor Mechanical Drawing Classes To meet the vital, current need for the swift training of mechanical and technical draftsmen, a series of 18 reading or discussional slide-films have been prepared by The Jam Handy Organization, 2900 E. Grand Boule- vard, Detroit, titled "Mechanical Drawing and Drafting." The material in this series is fundamental, designed to more quickly give the beginner an understanding of basic principles, tools, simple techniques and purposes. Selected frames from these subjects may be projected on the blackboard and traced in chalk for more leisurely detailed study and discussion when de- sired. In many instances this series is be- ing used in connection with actual practice and trial in the classroom, each student being supplied with draw- ing board, tools and drawing material involved in the lesson. In this way, the screened images in sequence are used as the basis for discussion and for the class to follow as the instructor projects the slidefilm and discusses the steps pictured, each completed cycle or action then being performed by all the class. Subjects in the series are: Measure- ments and Measuring (2 parts), Scales and Models, .Addition and Subtrac- tion in Geometry, Multiplication and Division in Geometry, Angular Meas- urement, Construction, "T" Squares and Triangles (2 parts), Geometric Construc- tion (2 parts). Drawing an Anchor Plate, Layout Work (2 parts). Slotted .\nchor Plate, Layout Tools and Measuring Instruments, Plotting Graphs, Analytic Geometry. A total of 1,112 individual pictures is presented in this unit composed of photographs, drawings, charts, dia- grams and exhibits. c^moncj ms iJ\oduaEi± Animals and Birds in Kodachrome Colorcraft Studios, 2174 N. E. Mult- nomah St. Portland 12, Oregon, of- fers teachers, nature lovers and lecturers a series of 2" x 2" Koda- chrome slides on birds, snakes and animals, photographed by William L. and Irene Finley, well-known authors and lecturers who have spent a life- time studying birds and animals and whose skilled color photography of these subjects is widely recognized. Catalog giving full particulars will be furnished on request to Colorcraft Studios. Filmatic Triple-Purpose Projector A triple-purpose Film Slide Pro- jector has been designed by the Golde Manufacturing Company, 1218 W. Madison Street, Chicago, for use in war training and industrial education. The machine is easily operated and permits utilization of three types of still projection material: 2x2 Koda- chrome or black-and-white slides, single frame or double frame 35mm slide films. An outstanding feature of the pro- jector is the new non-rewind device which eliminates rewinding after show- ing. Other features include instant fram- ing and adjustment, motor-driven forced air cooling system which protects the material against heat damage, precision four-element projection lens (5" f:3:5), fast, and sharp focusing, Manumatic slide carrier, and feed capacity up to 300 single frame pictures. 300, 200 and 100-watt lamps can be used. The "Filmatic" is compact and sturdy, yet easily portable. It is available on priority only. Radiant's New Catalog A complete new, illustrated screen catalog, carrying the title "In Step with the Times," has just been released by the Radiant Manufacturing Corp., 1140 W. Superior Street, Chicago. In addition to a full range of the regular Radiant screens, the new line of non-metal screens available for immediate delivery without priority, is announced and de- scribed. W.P.B. has granted Radiant permission to release a limited quantity of Metal Screens for essential activities on orders up to $100. A special section of the catalog ex- plains two new plans for renovating and repairing old screens for which Radiant has just installed a new department. DeVry Earns New Award To the .\rmy-Navy "E for Excel- lence" pennant awarded DeVry Cor- poration, Chicago, in April of 1943 has been added a white star significant of continued excellence in the production of motion pictures and equipment. In extending the congratulations of the Navy Department on their accom- plishment "to each and every man and woman of your company," Admiral C. C. Bloch, U.S.N. (Ret.) wrote: "The men and women of the .^rmi- tage Avenue and Wolcott Avenue Plants of the DeVry Corporation have achieved a signal honor by continuing their splendid production in such vol- ume as to justify this renewal of their award. "In the first instance it was difficult to win the Army-Navy 'E' and by meriting a renewal, the management and employees have indicated their solid determination and ability to sup- port our fighting forces by supplying the equipment which is necessary for ultimate victory." Slidefilms on Industrial Health and Safety Three new sound slide films are ofifered by R. M. McFarland & As- sociates, 520 N. Michigan .'\venue, Chi- cago. They deal with "Absenteeism," "Defense for Children of Mothers Working in War Industry," and "Safely Yours," for women in war industry. The National Safety Council, Inc., 20 N. Wacker Drive, Chicago, has in production a visual course of safety in- struction for management, consisting of ten slidefilms, with an approximate A shipment of 9' X 12' large size metal cover Pro- jection Screens with "Supreme" tripods is leaving Radiant's Chi. cage factory for overseas.