ühe tootja poolt valmistatud konkreetse ehitusega arvesti, mis omab samalaadseid metroloogilisi omadusi, neid omadusi määravate osiste sama konstruktsiooni, sama maksimaal- ja tugivoolu suhet, sama amper-keerdude arvu voolumähise tugivoolul ja sama keerdude arvu voldi kohta pingemähise tugipingel, particular design of meter, manufactured by one manufacturer, having similar metrological properties, the same uniform construction of parts determining these properties,the same ratio of the maximum current to the reference cuirrent, and the same number of ampere.turns for the current winding at reference current and number of turns per volt for the voltage winding at reference voltage