Description

A wooden resonance box 1140mm long, 125mm
wide and 100mm high. At one end of the base
are two 50N spring balances with hooks and at
the other end are two corresponding wrest pins.
Also included are three bridges; one large (to span
wires) and two small (for the individual wires).
Supplied with two steel wires, 30 swg, 1 metre
long.