Studies in blood-pressure : physiological and clinical . ometer, which is quite easily carried withoutindicating its presence in the inside breast measures only 9J inches in length, 1J inch inbreadth, and | inch in thickness. This littleinstrument consists of two parts : the manometerand the cover or box in which it is carried; thelatter when removed serves as a stand for themanometer ; it consists of two layers of wood, andit is detached by releasing the brass spring catch 1 From the following statement by Percival Nicholson {Blood-Pressure in General Practice, p. 22) it would seem
Studies in blood-pressure : physiological and clinical . ometer, which is quite easily carried withoutindicating its presence in the inside breast measures only 9J inches in length, 1J inch inbreadth, and | inch in thickness. This littleinstrument consists of two parts : the manometerand the cover or box in which it is carried; thelatter when removed serves as a stand for themanometer ; it consists of two layers of wood, andit is detached by releasing the brass spring catch 1 From the following statement by Percival Nicholson {Blood-Pressure in General Practice, p. 22) it would seem that Americanmercurial manometers yield larger errors from imperfect calibrationthan English ones: Two instruments recently examined werefound to vary 40 mm. APPARATUS 3 at the upper end of the instrument. Then aftersliding the upper piece of wood downwards so asto free it from the dovetailing below it is removed;the central swivelled portion is now turned cross-wise, and the cross thus formed is placed uponthe table; the brass-covered lower end of the. Era. 1. By kind permission of the Editor of The Practitioner. manometer is inserted firmly into the socket atthe centre of the cross-shaped stand, and wehave an upright manometer firmly fixed for obser-vation (Fig. 2). The manometer differs from the ordinary U--shaped instrument in having a separate scaleallotted to each limb. The scale affixed to the 4 STUDIES IN BLOOD-PRESSURE left limb, reading to 200 mm. Hg., suffices forthe general run of cases; and that on the rightlimb, reading from 200 to 300 mm. Hg., providesfor the exceptional cases. The employment of
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Keywords: ., bookcentury1900, bookdecade1910, bookid, booksubjectbloodpressure
