Tuning Forks welch type

Description :- Sliding weights on each prong of tuning fork can be adjusted to deliver tones at C-128, D-144, E-160, F-170.7, G-192, A-213.3 and B-240 frequencies.

Description :- Set of eight copper pipes with tuning fork (256 Hz) to show how resonance tones can only be created from certain pipes. O-rings are attached to the ends of the pipes which protects the tubes from the drop. Includes Instructions.

Description :- Six precision aluminium alloy tuning forks. Set consists of 125 Hz; 250 Hz; 500 Hz; 1,000 Hz; 2,000 Hz; and 4,000 Hz.

Description :- Hollow wooden sounding box 1290 x 130 x 110 mm, with mm scale, has two fixed bridges 72 cm apart over which wires are stretched. To one wire is fitted a spring balance reading to 100 N x 5 N and its tension can be adjusted by a winged nut and measured. Another wire passes over a pulley and can be loaded as desired. A third wire, for comparison, can have its tension adjusted by a wrest-pin. With 3 movable bridges, wrest-pin key, spring balance, and set of four wires of different diameters, each 1.5 meter long, without masses.