Glass bubbles for testing proof spirits, c 1840-1850.

Glass bubbles for testing proof spirits, c 1840-1850.
Round mahogany box 3 1/4 diam containing 18 coloured glass bubbles for measuring the density of proof spirits by A. Maroni 34 Brunswick Place c. 1840-1850"
 
Currently on display in:
Making the Modern World
Year made :
1840-1850
Inventory number :
1954-385