Example of the "London no.2" gas-controller (no.40592)
Example of the "London no.2" gas-controller (no.40592), with part of the casing of the movement fitted with transparent windows for exhibition purposes (with one winding key)
Example of the "London no.2" gas-controller (no.40592), with part of the casing of the movement fitted with transparent windows for exhibition purposes (with one winding key)
