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LicenseFour-hour watch glass, a large sand-glass used in ships
Science Museum Group
© The Board of Trustees of the Science Museum
Four-hour watch glass, a large sand-glass used in ships, 1600-1800
Details
- Category:
- Time Measurement
- Object Number:
- 1938-641
- Materials:
- wood (unidentified), leather, string, glass and sand
- Measurements:
-
overall: 370 mm 207 mm, 2.85kg
- type:
- sand glass
- credit:
- Mr. F. C. Ihlee
