Nikola Tesla Books
282 Cat. No. 4. MIGH FREQUENCY APPARATUS Celluloid name plate, 1 inches long, ½ inches high "Lamp." Price, each .05 Price, per doz. .40 Cat. No. 5. Same as No. 4. "High Frequency." Price, each .05 Price, per doz. .40 Cat. No. 6. Same as No. 4. "Spark Gap." Price, each Price, per doz. .05 .40 Cat. No. 7. Celluloid name plate, 134 inches long, ½ inch high, "Selector." Price, each Price, per doz. Cat. No. 8. Same as No. 7. "Regulator." Price, each Price, per doz. Cat. No. 9. Same as No. 7. "Secondary." .05 .40 .05 .40 Price each Price per doz. .05 .40 Cat. No. 10. Same as No. 7. "Primary." Price each .05 Price per doz.. .40 Cat. No. 11. Same as No. 7. "Main Switch." Price each .05 Price per doz.. .40 Cat. No. 12. Same as No. 7. "Spark Gap." Price each .05 Price per doz.. .40 Cat. No. 13. Same as No. 7. "Low Potential Oscillatory." Price each .05 Price per doz.. .40 Aluminum Name Plates. Bright aluminum name plates printed in black, 1 inches long, ½ inch high. Cat. No. 14. "Selector." Price each Price per doz.. $0.05 .40
