Davidka

The Davidka (Yiddish: דוידקה) was a homemade Israeli mortar used in Safed and Jerusalem during 1947–1949 Palestine war. Its bombs were reported to be extremely loud, but very inaccurate and otherwise of little value beyond terrifying opponents; they proved particularly useful in scaring away both Arab soldiers and civilians. It is nominally classified as a 3-inch (76.2 mm) mortar, although the bomb was considerably larger.