Large model of aneroid barometer.

Large model of aneroid barometer. A flat metal box, partially evacuated and with flexible sides, is attached at 'A' to a lever. As atmospheric pressure increases, the box is compressed and the pointer goes to the left. As atmospheric pressure decreases, the box expands and the pointer goes to the right. FLUID STATICS.
UCB Index: 
C+30+45
PIRA Index: 
2B35.40
Demo Diagram: 

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