Amalgam proportioner in original cardboard box, black PF plastic, by the S.S. White Co., London, 1946-1960 Amalgam proportioner in original cardboard box
Amalgam dispenser, black phenolformaldehyde plastic, probably English, 1930-1940 Amalgam dispenser 1930-1940
Amalgam proportioner, bakelite, by the J. Bird Moyer Co., USA, 1930-1940 Amalgam proportioner 1930-1940
"Vibron" automatic electric dental amalgam balance, English, 1965-1975 "Vibron" automatic electric dental amalgam balance 1965-1975