WHEEL AND AXLE SIMPLE Two wooden wheels 150 mm and 50 mm diameter with flat bottomed grooves. Supplied with two hooks and cords but without stand or masses....
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...