File:Murdock 1 kW rotary gap spark transmitter 1914.jpg - Wikimedia Commons
Rotary spark gap overview
Rotary Spark Gap No. 442A Amateur-D Murdock, WM.J. Co.;
File:Rotary spark gap transmitter.jpg - Wikimedia Commons
Rotary Spark Gap - YouTube
A 1.5 Million-Volt Tesla Coil
Rotary Spark Gap Amateur-D Haller-Cunningham, Halcun; San Fr
Professionally Built Tesla Coil With synchronous rotary spark gap | #1824602459
Rotary Spark Gap by teslaextreme on DeviantArt
Rotary spark gap overview
Craig's Area
Synchronous Rotary Spark Gap
Craig's Area
Rotary Spark Gap - a photo on Flickriver
TeslaStuff: The Rotary Spark Gap for a Tesla Coil
Terry Blake Home Page
KW synchronous rotary spark gap transmitter | Electronic schematics, Spark gap, Vintage radio
Tesla coil synchronous rotary spark gap motor & rotor
RSG
Variable Rotary Spark Gap for Tesla Coil - YouTube
Rotary spark gap Amateur-D McIntosh Electrical Corp.; Chicag
Rotary Spark Gap - YouTube
File:Rotary spark gap 1919.jpg - Wikimedia Commons
