M558 Stick Barometer

Rare multiple tube stick barometer consisting of an alcohol thermometer on the left, and then a quadruple J tube containing two 15" lengths of mercury (30" total) separated by a red dyed oil as transporting medium, with the fourth column also containing red oil, and operating on an expanded scale.

This type of barometer was made for a very few years around 1785-1795. This example, by Dominico Sala of London (working 1780-1810) has all original paper plated, and is fully working.

Maximum Dimensions 24 x 6
Date C. 1790
Price $3400.00

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