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Sphygmomanometers- Mercurial : Sphygmomanometers is still measured in units of millimeters of mercury shows how entrenched this unit is in clinical practice. The World Health Organization has permitted its continuing use at a time when the SI units have displaced other traditional units from quantitative measurement. Sphygmomanometers- Mercurial (Desk Model) 300 mm./Hg., with velcro type cuff, rubber bladder (two tubes- one small and one large), rubber bulb with metal air control valve.
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