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Science Museum Group Collection
© The Board of Trustees of the Science Museum
1991-216 : Single sand glass in four pillared wooden mount. 17 minutes. Horne Type B. Second half of the 18th century.
Science Museum Group Collection
© The Board of Trustees of the Science Museum
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.
Details
- Category:
- Time Measurement
- Collection:
- Sir Henry Wellcome's Museum Collection
- Object Number:
- 1991-216
- Materials:
- glass, sand and wood (unidentified)
- Measurements:
-
overall: 160 mm x 87 mm
- type:
- sand glass
- credit:
- On loan from the Wellcome Trust
