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Wooden Hourglass, +/-1750
Anonymous, UK
Maker:
Collectie:
NavigArte
There were marine hourglasses for measuring time on board of 30, 60 or 120 minutes.
This is a hangable wooden one of 30 min
1/1
Hand-blown glass bulbs mounted between turned wood plates with wooden supports filled with vulcanic sand, with original tar covered binding. This type could be hang and turned every 30 minutes.
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