The audio-visual handbook (1942)

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Types of Visual Aids and Their Uses 109 There are many advantages of the 16 mm. motion picture for educational purposes. In the first place, it is much cheaper than the film of 35 mm. size, in purchase price and in the cost of transportation. Photo Courtesy Bell & Howell Co. 8 mm. Motion-Picture Projector The fact that it is safety film means that it can be shipped by ordinary parcel post or express in small paper cartons at one-quarter or onethird the cost of shipping a comparable reel of 35 mm. motion-picture film. Another great advantage of the 16 mm. film is the ease with which it may be handled. It is light in weight and may be easily carried from place to place. Furthermore, the projection equipment for the use of this film has been simplified to the extent that any teacher with but a few minutes of instruction will be able to operate it successfully. It is certainly much easier to operate than some of the older classroom projectors for 35 mm. films. In addition to the simplicity of operation which characterizes the 16 mm. motion-picture projector, this pro