This is a vintage 'AIRFLOW METER' which was a device suitable for testing lung function in general medical practices. This one which is in excellent condition and still looks like it could be used today was introduced in 1975 and consists of the airflow meter, a tubular plastic mouth piece, an instruction manual and the plastic case it is housed in. It was made by by Allen & Handbury which were originally a British company that was later absorbed by Glaxo Laboratories. On one side stamped into plastic is -  AIRFLOMETER MANUFACTURED BY ALLEN & HANBURYS A DEVISIONOF GLAXOAUSTRALIA PTY.LTD.  On opposite side a dial with in 2cm devisions marked 0 - 90. On hard plastic moulded box - AIRFLOMETER, stamped into plastic. Allen & Hanburys symbol [(A-~-H)] Inspection available as is local pick up.