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

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THE FILM 171 78. Why is the motor-start distance to the change-over twelve feet and six frames? 79. Describe process of ascertaining the exact motor pick-up speed. " . 80. How should the correct start-frame number for each projector be reached? 81. Will motor pick-up speed always he the same? 82. Must motor pick-up speed be ascertained for eaeh projector? 83. How is the standard release print started? 84. Can the standard release prints be used to check for synchronism ? 85. How can exact synchronism he assured? 86. How is the standard release print threaded for synchronism with disc record? 87. Do cut-outs work injury to standard release print performance? --'