Clinical thermometer with aseptic stem
1904-1922
Clinical therometers and accessories by G.H. Zeal, London, c. 1900-1970.
1904-1922
1904-1922
1899-1922
1899-1922
1901-1950
1981
1922-1934
1919
1920-1960
1940-1970
1950-1980
1960-1980
1950-1980
1960-1980
1960-1980
1930-1970
1920-1950
1960-1980
1940-1980
1940-1970
1960-1980
1940-1970