French Test Tube +

Set of three fine and delicate test tubes on the stands... 26cm tall x 2cm diameter
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Antique thermometer would make a great addition to a Francophile curiosities cabinet or physic/science enthusiasts.  This densitometer is still in its original packaging and was made by the French company Dujardin-Salleron (established in 1855). It contains the original glass float with a ballast of mercury at its bottom; this allows it to partially submerge in a liquid and measure the density. (Please note this item has the original mercury inside). Some wear and tear appropriate with the age of this item. 

Approx length 30cm