Ericcson Hot Air Engine
This quarter-scale working engine model was made by R. Key, and could be used to drive light machinery.
L: 49,5 cm
W: 29 cm
H: 66 cm
Gas Engine
Made in 1910, full size. Small workshop engines often powered by coal gas, ignited by a spark or hot tube. This example would probably have been used to drive a small machine tool such as a lathe.
L: 47 cm
W: 18 cm
H: 40 cm