The circuit mount.
Sexton
A
A
D000764:Anesthesia, Closed-Circuit / Q000295:instrumentation; D000769:Anesthesia, Inhalation / Q000295:instrumentation*; D004867:Equipment Design; D006801:Humans; D008397:Masks; D010969:Plastics; D013499:Surface Properties
D010969:Plastics