Cardiovascular : Painting a picture of the many developments ocurring in the field of cardiology
Object ID Number:
Object Name:
Mercury Sphygmomanometer
W.A. Baum Co. Inc – New York
Date of Manufacture:
1926/ /
Description / History:
This mercury sphygmomanometer was made by W.A. Baum Co. Inc. in New York. It is a Lifetime Baumanometer and is the Desk Model. It comes in a wooden box with a metal knob that turns to open. There is black rubber tubing and pump. The green arm cuff reads "Tycos pre–calibrated". It has a capacity of 300 millimeters mercury. Similar to the Kit Bag Model which is also in our collection, this model was last patented on July 27, 1926. A sticker next to the measurement tube indicates that this instrument was sold by Faucet and Porter who had addresses in Philadelphia, PA and Reading, PA. William Baum's simple, accurate blood pressure instrument is the earliest model of the blood pressure machines used today. There are two of these units in the EHMHF collection.
H–2.25 W–4.5 L–13.75 inches
Additional Information:
In 1917, the Baumanometer was developed by William A. Baum, a worker in a large clinic which engaged in pre–employment physical exams. Baum's design was the first of the sphygmomanometers which needed no adjustments or recalibration, and its well–sealed tube prevented oxidation of the mercury used for measurement. Its simplicity and striking accuracy caused it to catch on with physicians across America, and variations of Baum's simple design stand today as some of the most popular blood pressure instruments.

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