Section of toy train track
- Materials:
- wood (unidentified) and brass (copper, zinc alloy)
- Object Number:
- 1984-1668/5 Pt1
- type:
- electrocardiographs
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