Its own development to one of the principles of the world is a great romance. The modern motion picture projection machine has grown up from the old tin magic lantern. It has become a marvel of mechanical perfection.
Every movement is precise.
It deals with minute quantities, which are magnified to colossal dimensions on the distant screen, establishing a condition for showing the smallest error or imperfection in the mechanism. The projection of the minute film picture is a severe test for the mechanism of the projection machine. This is the perfection of the mechanism. Other things are to be noted. The optical system is to be of the best.