Steam engine is polytechnic toy, which presents mock-up real steam engine and working same principle.
It is possible it use for drive model machine. Turning machinery is in both directions.
On base is fixation hearth with steam-boiler, furniture fittings and support with steam cylinder and divorce and crank mechanism.
Vapor goes through pipe to kettle-drums. We use dried spirit (esbit) as fuel (or warming gel for camping “Ecoflame”).