A shruti box is a small wooden instrument that traditionally works on a system of bellows. It is similar to a harmonium and is used to provide a drone in a practice session or concert of Indian classical music. It is used as an accompaniment to other instruments and notably the flute. Use of the shruti box has widened with the cross-cultural influences of world music and new age music to provide a drone for many other instruments as well as vocalists.
This shruti box has 12 reeds with 12 side mounted controls. The combinations of which produce hundreds of sounds. Integral bellows. Style may vary from photo. Approximate measurements: 14L x 9 W x 4 D inches.