Bourdon Gauge Mechanism — FRCA Primary MCQ
Instant feedback + full explanation. One question, done properly.
Educational content. Not a substitute for clinical judgement or local policy.
Reveal the answer and explanation
Correct answer: C — A coiled tube that straightens as pressure increases
The Bourdon gauge has a C-shaped hollow tube that straightens with increasing pressure. Mechanical movement is transmitted to a pointer on a calibrated dial. It measures gauge pressure without external power and is used on gas cylinders.
Reference: Al-Shaikh Stacey 2019 Essentials of Anaesthetic Equipment