Nikola Tesla Books
80 PARTS AND MATERIALS 231 7 SELECTOR 14 SELECTOR 8 REGULATOR 15 REGULATOR SECONDARY 16 MAIN SWITCH 2 10 PRIMARY 3 MAIN SWITCH 17 SPARK-GAP 12 SPARK GAP 189 MAINSC LAMP HIGH FREQUENCY SPARK 13 LOMU POTENTIALES GAP OSCILLATORY 4 5 6 Scales and Name Plates. Celluloid name plates printed in black ink on finest grade heavy white celluloid. Only titles listed can be supplied at present. Cat. No. 1. Celluloid Protractor scale, 180 degrees, 90 divisions of two degrees each, outside diameter, 438 inches, inside diameter, 2 15/16 inches, width, 34 inch. Price, each Price, per doz. Cat. No. 2. Celluloid scale, 6 divisions numbered 1 to 6, 3 inches outside diameter; 1½ inches inside diameter, fe .$0.25 2.00 inches width. Price, each .10 Price, per doz. .80 Cat. No. 3. Celluloid scale, 6 divisions, 0 to 5, same dimensions as Cat. No. 2. Price, each .10 Price, per doz. .90
