Comprising a wooden resonance box of 114 cm., length, 12.5 cm. width and 10 cm. height, with two rules 1 meter long sub-divided into millimeters. One each brass and steel wire of different diameter attached to fixed bridge and tensioned by fine adjustment pets, two movable bridges, pulley and fixed screw to enable a third wire to be fixed for tensioning by masses. One each additional wire of steel and brass, each 1.5 mm. length and 22 swg. |
