Description

Comprising a hollow wooden resonance box about 1290 x 130 x 110 mm, with two fixed bridges 72 cm apart on which wires are stretched. One wire is connected to a spring balance (100N x 5N) that can be adjusted and measured using a winged nut. Another wire passes over a pulley and can be loaded as desired. A third wire, used for comparison, can have its tension adjusted with a wrest-pin. The set includes three movable bridges, a wrest-pin key, a spring balance, and a set of four wires with different diameters, each measuring 1.5 meters in length. Note: Masses are not included.