FIELD: car service. SUBSTANCE: in compliance with invention pressure indicator is connected to microcontroller. Output of analog-to-digital converter is connected to microcontroller and its input is coupled to pressure transducer. Power supply source with system controlling switching-off of manometer is connected to activation button and to above-mentioned units. In addition manometer has threshold element connected to pressure transducer, device controlling stand-by condition connected to microcontroller and to threshold element and generator of trigger pulses connected to device controlling stand-by condition. Abovementioned device makes it possible to initiate units measuring pressure when pressure exceeds specified threshold value, to display its value on indicator and to switch off measurement and controlling circuits of manometer later. EFFECT: low energy consumption, operation under conditions of frequent measurement, generation of reliable statistic information. 1 cl, 3 dwg
