Description

Ten diagnostic disks and a manual for the Cameron Heartometer. The disks are 9.25″ in diameter. The Heartometer instrument shown in last image is not part of this listing! We’ve owned several Heartometers over the years but not disks or a manual. We are offering 10 diagnostic disks and the manual,  all in very good condition. The fourth image shows an illustration of  a disk with a diagnoses; there are a number of these diagnostic disks illustrations in the manual. Happy to provide additional images and respond to questions. 

“This diagnostic device was used to measure and graph a patient’s blood pressure, heart rate and well as an early attempt to measure the patients heart-beat wave similar to what a modern EKG does. Invented in 1937, it was one of the first medical instruments to take measurements from visual means (lights actuated by the pulse), rather than by sound. This insured the most accurate way of measuring and permanently recording systolic and diastolic blood pressures, pulse rate, the force and character of heart action and peripheral vascular circulation throughout the extremities. The Heartometer was so successful that a separate yet affiliated company was formed for its distribution.”