1847 R. B. Todd & W. Bowman II. 97 Müller..could by means of a sounding-rod..ascertain the relative intensity of the sonorous vibrations.
1853 J. F. W. Herschel (1873) vii. §58. 275 The vibrations which reach the ear from a sounding-string.
1881 W. E. Dickson v. 64 A long screw..biting well in one of the sounding-bars.