Description :-
Wooden baseboard 690 x 90 mm on four feet.
At one end are two 50 N spring balances with hooks and at the other are two wrest-pins.
With one large and two small bridges, wrest pin key and 2 steel wires, each 1 meter long, without masses.
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 In.
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 :-
Demonstrating longitudinal and transverse waves.
A number of eccentric discs move a number of metal rods.
Transverse waves are obtained by straight rods and longitudinal waves by bent rods.
Description :-
The high quality tuning fork set covers the octave from middle to high C.
It consists of one each of 261.6C, 293.7D, 329.6E, 349.2F, 392G, 440A, 493.9B and 523.2.
Set of eight with Activator.
Description :-
1200 x 115 x 60 mm hollow box with two fixed bridges with a one meter scale in between and with a pulley and wrest pin for wires, complete with a long movable bridge, wrest pin length, without masses.
Description :-
Consisting of 19 spheres, each mounted on a 75 mm long rod with a collar for attachment to a shaft.
The spheres are mounted at 20° intervals, equally spaced along the shaft.
The shaft rotates in two pillars mounted on a base.
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