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Article
November 1, 1919

STANDARDS FOR BLOOD PRESSURE APPARATUS

JAMA. 1919;73(18):1383. doi:10.1001/jama.1919.02610440063034

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Abstract

To the Editor:  —In response to requests from several sources, the Aeronautic Instruments Section of the Bureau of Standards is undertaking the establishment of standard tolerances for blood pressure gages. In this connection, we are anxious to obtain the opinion of medical authorities as to what allowable error can be permitted in using these instruments.It should be remembered that no instrument can be made absolutely accurate, and that even if it could, the personal equation of the user would still be a source of error. Consequently, some definite standard of accuracy should be established to be met by the manufacturer.The information that the gages should be "as accurate as possible" will be of little assistance to us. What we should like is a statement that an error of a certain number of millimeters of mercury in the reading can be reasonably allowed.We should appreciate also any general

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