Hydrometer marked O or W at top
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Hydrometer marked O or W at top, M at 32, 45 at bottom of stem scale, glass and mercury
Details
- Category:
- Meteorology
- Object Number:
- 1995-1819
- Materials:
- complete, glass, mercury, paper (fibre product) and wax
- type:
- hydrometer and hydrometer and
- taxonomy:
-
- furnishing and equipment
- measuring device - instrument
- densimeter
- credit:
- Meteorological Office
