Simple Wheel Axle
Consisting of a wooden double wheel with flat bottomed grooves, 150 and 50 mm. diameter respectively. The wheel is pivoted on a spindle 10 mm. diameter which projects for a distance of 100 mm. so that the apparatus may be clamped to a normal retort stand. The apparatus is supplied complete with two hooks and 6 meters of whipcord, but without masses and stand.