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Science Museum Group Collection
© The Board of Trustees of the Science Museum
Science Museum Group Collection
© The Board of Trustees of the Science Museum
Electrocardiographic research recording apparatus, consisting of geared pulleys and toy trains on tracks which carried photographic plates, used in A.D. Waller's electrocardiographs of man, 1887-8, Waller collection
Toy train track with assorted pulleys, for Waller's early electrocardiograph experiments, 1887-8, Waller collection
Toy train track with assorted pulleys, for Waller's early electrocardiograph experiments, 1887-8, Waller collection
Toy train track with assorted pulleys, for Waller's early electrocardiograph experiments, 1887-1888, Waller collection.
Toy train waggon for Waller's early electrocardiograph experiments, 1887-8, Waller collection
Toy train waggon for Waller's early electrocardiograph experiments, 1887-8, Waller collection
Toy train waggon for Waller's early electrocardiograph experiments, 1887-8, Waller collection
Toy train waggon for Waller's early electrocardiograph experiments, 1887-8, Waller collection
Toy train waggon for Waller's early electrocardiograph experiments, 1887-8, Waller collection
AD Waller's model train, track gearing and replica of photographic plate used in experimental electrocardiographic work. 1887-8, Waller collection.
Wooden slide used for holding photographic plate during Waller's early eletrocardiograph experiments. 1887-8
