Artificial glass horizon.

1805-1815 in England

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Artificial glass horizon in square fitted mahogany case with funnel and instructions, made by unknown English maker, 1805-1815. Consisting of a circular brass container with three levelling feet, which holds spirit, covered by a transparent glass plate. When in use, the vessel is filled with spirit using a detachable funnel, leaving an air-gap under the glass to act as a bubble level, which is centred with levelling screws. The funnel is also used to replacing the spirit and for release of pressure when the liquid expands due to heat.


Object Number:
artificial horizon - glass
  • furnishing and equipment
  • tools & equipment
  • optical instrument
  • ancillary optical instrument
  • artificial horizon
Mr Thomas H. Court

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