Sonometer, Complete With Spring Balance, Altay type

With Spring Balance 0-50N Hooked Weights + Spare tension wire length (70-80cm) Super Delux . Investigating the vibrating string. Appealing and elegant, the Sonometer is a classical device developed in order to study vibrating strings. With this apparatus it is possible to investigate the dependence of the pitch on the length, tension and thickness of a vibrating string