F. H. Richardson's bluebook of projection (1935)

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646 RICHARDSON'S BLUEBOOK OF PROJECTION trouble must know exactly what to do and precisely how to go about doing it, without having to stop for prolonged reflection. The competent projectionist will be mentally prepared for any type of difficulty he can possibly anticipate, and when it occurs go about restoring his show without waste of time. (4) Since time is of such vital importance in repairing trouble, the first qualification of a good trouble-shooter is that he keep cool in emergency. If he knows his equip Fig. 154. — Belt-driven sound-head. ment thoroughly, in principle and in detail, he will find it easy to keep cool and to work fast and systematically. If he is doubtful and uncertain of his knowledge of his business he will probably become flustered, and then nothing but undeserved good luck can help him. The qualifications of a good trouble-shooter are therefore coolness, full and detailed knowledge of his business, and the self-confidence that only such knowledge can give.