Vulcanizer for motor car tyres, with outfit no. 4, made by Harvey Frost & Co., 1912 Vulcanizer for motor car tyres 1912
"Rathbone" electric dental vulcanizer, No. 354, by the Dental Manufacturing Co., London, 1930-1950 "Rathbone" electric dental vulcanizer
Dental vulcanizer, gas fired, by Ash, England, fitted with D.M. Co. regulating gauge, England, 1900-1930 Dental vulcanizer 1900-1930