Nikola Tesla Books
234 HIGH FREQUENCY APPARATUS Cat. No. 19A. Similar to No. 19 but smaller and cheaper, single blade, edgewise contact, composition handle, Hinch diameter. Price each Price per half dozen. Price per dozen... Cat. No. 20. Nickel plated switch point inch diameter, 1 inch high with brass screw. Price lots 50 to 99 each.. Price each 1 to 49... Price lots 100 or more.. Cat. No. 21. Nickel plated switch points, inch diameter, inch high with brass screw. Price lots of 50 to 99 each... Price each 1 to 49....... Price lots of 100 or more... Cat. No. 22. Plain brass switch point, ¼ inch diameter on face, inch high, knurled shank f inch, threaded shank inch, plain shank inch, overall length, 1 inch with nut. Price each 1 to 49... .20 .90 1.50 .06 .05% .05 .05 .04% .04 .05 .04% .04 inch diameter, .04 .03% .03 Price lots of 50 to 99 each. Price lots of 100 or more.. Cat. No. 23. Nickel plated switch point, finch high with nickel plated iron screw. Price each 1 to 49.... Price lot 50 to 99. Price lots of 100 or more.. Cat. No. 30. Nickel plated brass cylinders, ends not plated, threaded hole 8-32, inch high, f inch diameter. Price each 1 to 49...... Price lots of 50 to 99 each. Price lots of 100 or more.. Cat. No. 30A. Same as No. 30 but plain hole in center, No. 18 drill (.169 in.) to clear 8-32 threaded rod. Price each 1 to 49. Price lots of 50 to 99 each.. Price lots of 100 or more.. .05 .04% .04 .05 .04% .04