| Description | A ratchet, also called a noisemaker or Knarre (German) (or, when used in Judaism, a gragger, grogger, or gregger (etymologically from Yiddish: גראַגער), raganella or ra'ashan (Hebrew: רעשן)), is an orchestral musical instrument played by percussionists. Operating on the principle of the ratchet device, a gearwheel and a stiff board are mounted on a handle, which rotates freely. |
| On Wikipedia | https://en.wikipedia.org/wiki/Ratchet_(instrument) |
| Parent instrument | Percussion |