The apparatus consists of a stout wire loop mounted in a
perspex block with a plated brass knife edge is pivoted on
pillars and with two movable weights. A small lamp-house containing
a 12 volts 24 Watts S.B.C. Bulb. A perspex screen held vertically
in a channel. A copper disc with a hanger which can be suspended
from a moveable clip on one of the side arms of the loop.
A small perspex gauge block is provided. Mounted on a polished
Overall dimensions 530 * 200 * 130 mm high.
Compete with following :
1 straight wire, 2 loops of wire with end 100 and 150 mm long,
1 perspex pivot block with socket and balancing weights, 1
calibration gauge, 3 riders, 1 ground perspex screen, 1 damping
disc with hanger.