High Frequency Apparatus Page 241

PARTS AND MATERIALS Tubes for Winding Tesla Coils. Cardboard cylinders, 13 inches long, 8 inches diameter.. Cardboard cylinders, 8 inches long, 6 inches diameter.. Cardboard cylinders, 13 inches long, 8 inches diameter, wound for Tesla coil secondary... Cardboard cylinders, 8 inches long, 6 inches diameter, wound for Tesla coil.. 241 Each $0.35 .30 1.25 .90 Edgewise Wound Copper Strip for Tesla Coil Primaries. Thickness of Inside dicopper strip Width ameter of turns Price, per turn 18" 18" 5" $0.10 18" ½" 7½" .15 fo" ½" 1034" .25 Copper Ribbon. Thickness .005" .005" .016" .016" Width Price per foot. 18" $0.00% ½" .01 1" .05 1½" .07%2 Hexagon Brass Nuts. Thread Cat. No. 24. 6-32 Cat. No. 25. 8-32 Cat. No. 26. 10-32 Cat. No. 27. 14-20 Cat. No. 28. -18 Per doz. Per 100 $0.10 $0.40 .10 .45 .12 .50 .16 1.00 .20 1.10 Cat. No. 47. Copper washers, 8-inch diameter, 1/4-inch hole, -inch thick Price, each .$0.02 Price, per 100.. 1.50 Cat. No. 48. Copper washers, 5-inch diameter, f-inch hole, -inch thick. Price, each .01 Price, per 100 .75 Cat. No. 49. Copper washers, ½-inch diameter, 16-inch hole, 1/32-inch thick. Price, each .00% Price, per 100 .30