Tonometer - a device for measuring blood pressure, so you can quickly and accurately measure blood pressure at home. Tonometer is an essential device for people who, by virtue of any cause, have the need to constantly monitor your blood pressure.

Tonometer consists of the cuff, worn on the hand of the patient, the device for forcing air into the cuff and a manometer, which measures air pressure in the cuff. Also, the sphygmomanometer equipped with either a stethoscope or electronic device by the registration of pulsation of air in the cuff.

The three main categories, which are subdivided pressure gauges - is an automatic blood pressure monitors, sphygmomanometers and semi-mechanical sphygmomanometers. When choosing tonometer must take into account the physical data and additional requirements of the person who will use it.

Mechanical sphygmomanometers rather difficult to use, because the measurement accuracy depends on the severity of hearing (for fixing heart tones), skills and practices. That is why the mechanical sphygmomanometers mainly used by doctors and medical workers.

Electronic (automatic and semiautomatic) tonometers are ideal for home use, because it does not require additional skills. Fluctuations of the pulse transmitted through the cuff to a special sensor, then the information is processed by special algorithm, and the screen reflects the testimony of blood pressure (the upper and lower) and pulse. Electronic sphygmomanometers not require professional setup and remember the testimony of 60 to 120 measurements.