Janet Pickles has written a article for the July Issue of the Dental Historian. It references the development of Inhalation sedation equipment (and anaesthetic vaporizers) in Keighley from the Post WWII period onwards. This includes the history of the Quantiflex flowmeter range – specifically the MDM (Monitored Dial Mixer) – a inhalation sedation flowmeter still in very extensive use across the world.
Ref: Dental Historian Vol. 67 (2) July 2022 pages 68-72