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to No. 2 projector, lace up the next reel to be used on No. 2 with the first of the actual title or picture-frames correctly located in the gate. The synchronising leader is ignored in this case and also, no action will be taken when the first cue appears.
On the second cue appearing, switch on No. 2 and at the same time switch off No. I. After making quite sure that No. 2 is running to your satisfaction, remove the film from No. i by unlacing its trailer and then wind it up by hand.
Making Change-over Cues
Although recent standards have been agreed upon for the size and position of cues and leaders, etc., you will still find an occasional library film which perhaps has no cues at all and a syncleader too short to be of any use. In some cases the cues may appear in the bottom right-hand corner of the picture but that, of course, indicates a mistake in printing. We only mention this to put you on your guard. If you cannot see the first cue at all and the reel in use is almost at an end, you must take a chance and start the change-over as though you had seen it!
You are not permitted to make your own cues on a library film. If you do, you will be accused of mutilation. But there is nothing to stop you from making cues on your own films. They can be made by very carefully scratching a small dot or circle on four consecutive frames or, if the frames be very light in tone, by applying the dots with black ink.
Mark the second cue about one foot from the end of the picture-frames at the end of the reel, and then make the first cue at a distance along the film equal to the distance between your own particular leader start-frame and the first of the titleframes.
It is important to make the dots each exactly the same size and in exactly the same position on each frame. And make them as small as possible — they will look large enough when the picture is projected on the screen.
Change-over Units
Small compact units are available which allow both projectors to be controlled from a central point. They are supplied by most manufacturers of sound equipment and as with other acces
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