It is a device developed in order to study vibrating strings. Investigation on the dependancy of the pitch on length, tension and thickness of a vibrating string can be done.
Provided with three wires, two scales (scale length 50cm), one number of spring balance (capacity 100N), two fixed and three moveable bridges. A pulley is also attached on the corner of sonometer. Over all size 67.5x10x10.5cm approx.
It is used for illustrating wave motion. A flat section anodized steel wire is wound in 75mm dia helix coil. Closed length 150mm and fully extended to approx. 3m.
For demonstrating transverse waves, wave propagation, wave reflection, standard waves & nodal points. Plated steel dia. 20mm and length 2 meters.