French Meccano and Hornby O gauge 0 20-volt Resistance Controller, c1938 (ref YHAD
Collectables:Model Railways and Trains:Power and Control:Speed controller – French Meccano and Hornby O gauge 0 20-volt Resistance Controller, c1938 (ref YHAD
Collectables:Model Railways and Trains:Power and Control:Speed controller – French Meccano and Hornby O gauge 0 20-volt Resistance Controller, c1938 (ref YHAD