Barometer containing a straight glass tube, closed at the top end and with the bottom end immersed in a small chamber, or cistern, containing the mercury. The cistern cover is often decorated with bronze mounts and wooden carvings. See siphon barometer.
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Barometer containing a straight glass tube, closed at the top end and with the bottom end immersed in a small chamber, or cistern, containing the mercury. The cistern cover is often decorated with bronze mounts and wooden carvings. See siphon barometer.
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A cistern barometer was a common 19th century form of barometer consisting essentially of a straight glass tube about thirty-three inches long, filled with mercury, and dipping into a cistern of the same metal. The tube was affixed to a mahogany stand, on the upper part of which was a graduated scale to mark the height in inches at which the mercur...
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a mercury barometer in which the lower mercury surface has a greater area than the upper. Also called
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