Southern Cross YB 4hp diesel engine
Made in 1946 in Queensland Australia

Single piston diesel engine with water cooling in circulation. Engine attached to a water tank. The water heats up, cools down and flows back to the bottom.

The engine activates an air compressor that fills a tank for starting the Ruston engine.

The compressor is manufactured at the National Gas and Oil Engine Co. in Ashton under Lyne, England.