Movement 500
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500. Pressure gauge now most commonly used. Sometimes known as the “Magdeburg gauge,” from the name of the place where first manufactured. Face view and section. The fluid whose pressure is to be measured acts upon a circular metal disk, A, generally corrugated, and the deflection of the disk under the pressure gives motion to a toothed sector, e, which gears with a pinion on the spindle of the pointer.

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