sonometer

noun

1. an instrument used to measure the sensitivity of hearing
   Terjemahkan ke Indonesia sumber: wordnet30
2. An instrument for exhibiting the transverse vibrations of cords, and ascertaining the relations between musical notes. It consists of a cord stretched by weight along a box, and divided into different lengths at pleasure by a bridge, the place of which is determined by a scale on the face of the box.
   Terjemahkan ke Indonesia sumber: webster1913