Nail violin

Nail violin
Nail violin, Bohemia. Czech Museum of Music, Prague
Other namesNail harmonica; (Fr.) violon de fer; (Ger.) Nagelgeige, Nagelharmonika, Eisenvioline; (It.} violino di ferro
Classification idiophone
Hornbostel–Sachs classification131.2
(Sets of friction sticks)
Inventor(s)Johann Wilde
Developed1740

The nail violin is a musical instrument that consists of a semicircular wooden soundboard, with nails of various lengths arranged to produce a chromatic scale when a bow is drawn across them. It was invented in 1740 by German violinist Johann Wilde.