(Cardiograph.)
Description: A device to be attached to an organism's chest in
order to measure the physical movement of the heart in the chest.
There are three standing feet made of hard rubber. The ball-
spring can be adjusted with a placing-screw without adjusting the
air-capsule which transmits pressure differences through a tube
to a kymograph. (Expanded caption Copyright 1998, Edward J.
Haupt)
(Source: None given.)
Source of illustration: Zimmermann, E. (1903). XVIII. Preis-
Liste über psychologische und physiologische Apparate
(p. 92). Leipzig: Eduard Zimmermann.
DESCRIPTORS:
Type: Component
Stimulus: Heart volume
System: Heart
Output: Cardiac volume