See, e.g., Remnant, Musical Instruments of the West (London: Batsford, 1978), p. 177; see also, conveniently, The Century Dictionary, rev. ed., 10 vols. (London and New York: The Century Co., 1899), vol. 7, p. 5337, with an illustration from a Persian painting (this dictionary was edited by the great Yale Sanskrit scholar William Dwight Whitney).