A Ringrose Firedamp Alarm.
This Ringrose Firedamp Alarm was made by I.G.D. Ltd the International Gas Detectors Limited of Leeds, England.
Made from plastic, glass, iron and brass. Size 10″ x 4″ x 4″ inches.
Dated to the 1970’s-1980’s.
These Ringrose Firedamp Alarms were made with a steel casing and also a later plastic casing version.