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116 The Audio-Visual Handbook „
ference between the costs of parcel post and express. Both postal and express employees are usually ready to co-operate to the fullest extent in providing the best of service, and express shipments require no additional insurance. Also, return express shipments are accepted at half rate.
Current Developments. It is interesting to notice that there are now many excellent 16 mm. motion-picture subjects available for school use, and that the majority of the silent films in production are being planned for film of 16 mm. size. It is but seldom that a 35 mm. silent motion-picture subject is announced in current publications, whereas new 16 mm. silent subjects appear in each issue of the leading magazines in the field.
Convenience. The majority of the conveniences of the 16 mm. motion picture have been suggested earlier. The two great conveniences of this type of film are the ease of handling and the ease of projection. There are two factors which contribute liberally, the light weight of both films and equipment and the simplicity of operation of the projection equipment.
16 mm. Silent Motion-Picture Projection Equipment. One of
the great advantages of the 16 mm. motion picture is the ease and economy with which it may be projected. The majority of the projectors available for use in schools are extremely simple to operate, require a minimum of attention, and are readily portable. Furthermore, the best types of projectors will give projection results which compare favorably with those secured by the use of 35 mm. film-projection equipment.
There will be no attempt, in this publication, to classify the various projectors available. All the leading projectors offered for sale have certain points of favor and certain limitations. These projectors range in price from $75 to $180, depending largely upon the completeness of the instrument, quality of lenses, size of lamp, and the like. There are many small projectors available, ranging in price from $3.98 to $50.00, but the majority of the projectors which sell at a price below $60.00 are merely toys and should not be purchased for school use. In addition to their limitation in projection ability, quite often they are poorly constructed and will have a tendency to damage the film during projection.
Selection of Equipment. Those who may be considering the purchase of 16 mm. motion-picture projection equipment will do well to