2/21
[ stop the slideshow ]

Sphygmograph

Reduce slideshow speed Increase slideshow speed Do not repeat slideshow Previous Pause slideshow Next
Sphygmograph.jpg The Heart cut in the Plane of its Long Axis, and the Vessels which open into and out of itThumbnailsDiagram showing the Relative Positions of the Organs of the Chest and Abdomen.The Heart cut in the Plane of its Long Axis, and the Vessels which open into and out of itThumbnailsDiagram showing the Relative Positions of the Organs of the Chest and Abdomen.The Heart cut in the Plane of its Long Axis, and the Vessels which open into and out of itThumbnailsDiagram showing the Relative Positions of the Organs of the Chest and Abdomen.The Heart cut in the Plane of its Long Axis, and the Vessels which open into and out of itThumbnailsDiagram showing the Relative Positions of the Organs of the Chest and Abdomen.The Heart cut in the Plane of its Long Axis, and the Vessels which open into and out of itThumbnailsDiagram showing the Relative Positions of the Organs of the Chest and Abdomen.

A, An ivory button which is pressed on the skin over the radial artery by a metal spring.
B, A continuous screw which works against the cogwheel
C. By rotating B, the lever
D is raised to a position in which its point scratches the travelling-plate
E (covered with blackened paper).
F, A box containing clockwork which moves E.
G, A screw by means of which the pressure of the spring is adjusted to the force of the pulse.