Rubber Hammer, Medium

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 :- Tuning Fork Activator is used as a surface to gently strike the tuning fork to activate vibrations. Rubber activator is tapered so the bottom is wider for stability. Made of solid rubber.

Description :- Threaded shanks, mounted on a common resonance box and having frequencies of C1 (256), E (320), G (384) and C2 (512) Hz. Size of box 285 x 115 x 63 mm approx. complete with hammer.

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.