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May 11, 1912


JAMA. 1912;LVIII(19):1443. doi:10.1001/jama.1912.04260050119014

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Mercury sphygmomanometers are generally recognized as being more desirable than the spring or diaphragm type. Most of them, however, are too large to be carried in the ordinary bag, and the other instruments are either inaccurate, or easily broken. Owing to the demand for a more portable bloodpressure manometer, I have attempted to devise one which can be easily carried and operated. The one herewith described I have found accurate and it should prove to be durable.

The case consists of a neat cherry box 9 inches long. The handle serves a double purpose in that it may be used for carrying the instrument when closed, and maintaining the manometer in a vertical position when in use.

The manometer consists of a U-shaped tube, with a detachable extension for the right arm; the connection being made by carefully fitted metal parts. Flint glass is used because of the action of

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