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Nautical antiques/7148-Recorder Barograph
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Nautical antiques/7148-Recorder Barograph
Nautical antiques/7148-Recorder Barograph
Nautical antiques/7148-Recorder Barograph
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Nautical antiques/7148-Recorder Barograph
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Code 7148
EUR 900.00
In stock

EUR 900.00
In stock

used

1638805620Code 7148 Recorder BarographWood and Brass recorder barograph signed R.F. Richard Frères Paris brevetés S G D G n. 73494 end of XIX century. It is an instrument the provide a diagram of the pressure over time and in a particula place.

aneroid barograph, from the Greek "without liquid", is an ancient measuring instrument that records the values of atmospheric pressure and deduces the trend to make atmospheric forecasts. The sensitive element that determines the variations in atmospheric pressure is formed by eight aneroid capsules, in superimposed copper, in which a partial vacuum is produced. The deformation of the capsules, with their contraction or expansion according to the pressure changes, is amplified by a system of levers; these variations are then recorded on a diagram sheet thanks to an inked pen.

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Code 7148 Recorder Barograph

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