averaging automatic tank thermometer consisting of several temperature elements of varying length, with all the elements extending upwardo from a position close to the bottom of the tank, and where the readout equipment selects the longest, completely submerged tempearature element to determine the average temperature of the liquid in the tank, keskmistav automaatmahutitemperatuurimõõtur, mis koosneb mitmest erineva pikkusega temperatuurielemendist, consisting of several temperature elements of varying length, with all the elements extending upwards from a position close to the bottom of the tank, and where the readout equipment selects the longest, completely submerged temperature element to determine the average temperature of the liquid in the tank