The invention relates to devices for the diagnosis of various diseases of the cardiovascular system recording method living tissue impedance changes arising from the cardiovascular system (inflow and outflow of blood). The object of the utility model is to increase the accuracy of measurement of the pulse wave by allowing the entry of the human body separately from the resistance change of the pulse waves in blood vessels (arteries and veins) and from the change in filling the capillaries. This problem is solved by using two human body resistance of recording channels: the length and breadth of the arteries and veins. The technical result of the utility model is achieved in that Rheograph comprising first and second four-terminal resistance of the body portion sensors having current and potential contacts, as well as processing and display unit, a generator of high-frequency signals, having a data output which is connected to the processing unit and a display, according to the utility model is further introduced a first and second synchronous detectors, and a generator of high-frequency signals having first and second signal outputs and is configured to awn measurement of high frequency currents flowing through the first and second signal outputs, and outputting the measured values of the currents to an information output of the generator, the first uses a four-sensor measures the resistance along the arteries and veins of the body portion, and the second uses a four-sensor measures the resistance across the arteries and veins of the same area of the body, high-frequency signal generator in the high-frequency voltage of the second output signal is shifted in phase by 90 degrees relative to the need for high th voltage of the first signal output, the first signal generator output connected to the current contacts of the first four-contact sensor, the second signal generator output is connected to the current contacts of the second four-contact sensor, potential c
