contador
/kontaˈdoɾ/ · B2 · noun · m
counter
🔢 contador = contar (to count) + -dor (one who does) → counter, meter
Spanish contar means to count, and the suffix -dor marks an agent or device that does the action. So contador is the thing or person that counts: a meter, counter, or accountant-style measurer. Compare English count and counter.