FIELD: automatic control systems, namely device for determining time period of object operation under load, loading intensity and degree of using object according to time duration, possibly in different branches of national economy, particularly for counting up salary for personal. SUBSTANCE: apparatus for controlling degree of using object includes display unit whose second inlet is connected with second outlet of power supply unit, control unit. Apparatus includes in addition electric current and voltage pickups, mean load unit in the form of microprocessor having non-volatile memory and timer. Apparatus provides simultaneous measuring of summed value of operational periods, energy consumed for such period and mean operational load of object. EFFECT: enhanced accuracy and reliability at determining degree of using object. 3 cl, 1 dwg _
