The Little Devil vertical stationary engine was built by Michael Barker, of NY, in 2019. The engine mounted as shown measures 8-inches long, 5-1/2-inches wide, and 8-inches tall. Without the base it measures 4-1/2-inches high by 3.9-inches wide and sports two 2-5/8-inch diameter flywheels. It has a 3/4-inch bore and runs about 350 rpm on Coleman fuel with WD-40 mixed in. The crankcase holds about 4cc of motor oil for splash lubrication, but the valves and rocker assembly need manual lubrication before operation.