Mercurial Sphygmomanometer is a traditional blood pressure measuring instrument, which is still considered to be the bench mark of blood pressure measurement.
Maximum error tolerance of +/- 2 mmHg.
99.99% pure Mercury.
Precision glass column internal diameter 4.2 mm +/- 0.2 mm (0.17 in +/- 0.1 in)
Precision air release valve, wear-free and with fine regulation.
Microfilters to protect the measuring system and against mercury pollution.
Two-tube bladder cuffs with plastic plug-in type connector.
Metal faceplate with easy-to-read scale up to 300 mmHg.
Large storage compartment for cuff and bulb.