Richardson's handbook of projection (1930)

1178 HANDBOOK OF PROJECTION FOR mark on the shutter rim made opposite it. This is not, of course, a matter of necessity, but rather of convenience. (4) Place record on turntable in accordance with following. Important: To avoid possible damage to record and failure of synchronism, it is imperative that the driving motor remain absolutely stationary while record is being placed and adjusted on turntable. (5) Handling the record carefully, and with both hands, lay it on turntable in such position that when the reproducer arm is swung into position the needle point will come approximately at record starting point. (6) Wipe off the record gently but thoroughly before placing arm in starting position, using the cleaner provided by preference, but in no event a harsh or dirty cleaner. Permitting dust to remain on a record will not only serve to work injury to the record itself, but also it will injure the quality of the reproduced sound, and increase "surface noises." (7) Having the record in place and perfectly clean, grasp the end of reproducer between thumb and forefinger of left hand (it really does make a difference just how things are done, so train yourself to do them the right way) in such manner that the tips of thumb and finger project half an inch or so below bottom of needle point. Move reproducer over until needle point is above starting point, resting thumb and finger on surface of record so as to hold needle point just clear of the groove. (8) Holding needle as above, place right hand as shown in Fig. 430, with fingers pressing lightly upon under surface of turntable and thumb on upper edge of record, as shown. Hold turntable steady while you,