Electric incubator by Charles Hearson, 1900-1960. (Former number pH628) Electric incubator for laboratory use 1900-1960
Copper lined gas heated wooden incubator by Charles Hearson. Early twentieth century. Gas heated incubator for laboratory use 1901-1960
Electric Incubator, Charles Hearson, 1901-1970. (Former number pH755) Electric Incubator for laboratory use 1901-1970
Incubator, embedding oven, wood & brass, with extra capsule at 127F, thermostatically controlled, by Chas Hearson & Co., Hope Works, Willow Walk, London, SE1, England, 1900-1980. Incubator, embedding oven 1900-1980
Egg incubator by Hebditch, c.1930; convection circulated air, paraffin heated Egg incubator by Hebditch 1925-1935
Egg incubator by the Stephens Cabinet Incubator Co. Ltd. c.1938; fan circulated air, electrically heated Egg incubator by the Stephens Cabinet Incubator Co. Ltd. c.1938; fan circulated air 1938
Egg incubator "Junior 600" by Hearsons, c.1930; water circulation, paraffin heated Egg incubator "Junior 600" by Hearsons