Single sand glass in four pillared wooden mount. 17 minutes. Horne Type B. Second half of the 18th century. (B3247)
Single sand glass in four pillared wooden mount. 17 minutes.
A sand glass measures out a specific length of time. They were used at sea to time a ship’s ‘watch’, or to calculate the ship’s speed.
- Time Measurement
- Object Number:
- sand glass
- On loan from the Wellcome Trust
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