The Lidwill machine was designed by Mark Lidwill in 1913, for the purpose of mechanical or insufflation anaesthesia. It was manufactured by Elliott Bros. of Sydney. Shortly afterwards, the Anaesthetic and Portable Machine Company of Sydney devised a machine that was functionally the same but also contained an electric lamp heater.Colour photograph of a modified Lidwill anaesthetic machine sitting on carpet, taken from above. The vaporiser is metal and circular, and has metal valves and controls and two orange tubes. The machine has an electric cord and power plug which is coiled on the floor.anaesthetic equipment, lidwill anaesthetic machine, mark lidwill, ether vaporiser, anaesthetic and portable machine company of sydney, vaporiser

"Y" shaped hollow metal tubing with a red rubber stopper at the intersection of the "Y".