Wheel and axle Small 320×307 Medium 640×614 Large 1024×983 Download TIFF Original 2400×2303 | (1.2 MB) Description "The wheel and axle consists of a wheel united to a cylinder in such a way that they may turn together on a common axis. It is a modified lever of the first or second class." — Avery, 1895 Keywords axle, gear, lever, machine, wheel Galleries Wheel and Axle Source: Elroy M. Avery School Physics (New York: Sheldon and Company, 1895) 139
