Thomas Lewis’ electrocardiograph
1930
Portable electrocardiograph, Cambridge, England, 1929
1929
Waller's electrocardiograph, London, England, 1887-1888
1887-1888
Portable electrocardiograph machine, Cambridge, England, 1928
1928
Sanborn Viso-Cardiette electrocardiograph
circa 1949
Electrocardiogram (ECG) monitor, Bristol, England, 1946-1949
1946-1949
Boulitte electrocardiograph
1900-1930
Cambridge electrite direct-writing electrocardiograph machine
1950
Portable electrocardiograph, Cambridge, England, 1946
1946
Electrocardiograph, London, England, 1970-1990
1970-1990
Portable electrocardiograph, Cardioplan 531
circa 1970s
Portable electrocardiograph
1978
Portable electrocardiograph, England, 1978
1978
Matthews Portable Electrocardiograph
1931-1933
Cables and straps associated with Portable electrocardiograph, England, 1978
1978
Cardisuny Electrocardiograph
Module containing one ECG module and three blood pressure monitors
1979
Sanborn Visette portable electrocardiograph
1950-1959
Cardisuny Electrocardiograph
Cables and straps associated with Portable electrocardiograph, England, 1978
1978
Cardisuny Electrocardiograph
Battery for Boulitte electrocardiograph
1900-1930
Component of Boulitte electrocardiograph
1900-1930
Rubber components of Boulitte electrocardiograph
1900-1930
Portable electrocardiograph machine, Cambridge, England, 1928
1928
Portable electrocardiograph machine, Cambridge, England, 1928
1928
Boulitte electrocardiograph
1900-1930
Battery for Boulitte electrocardiograph
1900-1930
Wooden component of Boulitte electrocardiograph
1900-1930
Component of Boulitte electrocardiograph
1900-1930
Wooden box of photographically sensitive paper for Boulitte electrocardiograph
1900-1930
Battery for Boulitte electrocardiograph
1900-1930
Cables and straps associated with Portable electrocardiograph, England, 1978
1978