Roof artificial horizon

A rectangular mahogany trough, with an edge broken, for a mercurial roof artificial horizon. The rest of the instrument is missing.

John Lort Stokes (1812-85), the original owner, was an officer in the Royal Navy who spent most of his career as a hydrographic surveyor.

Object Details

ID: NAV0017
Collection: Astronomical and navigational instruments
Type: Artificial Mercurial Horizon
Display location: Not on display
Creator: Unknown
Date made: circa 1840
People: Stokes, John Lort
Credit: National Maritime Museum, Greenwich, London. Caird Fund.
Measurements: Overall: 21 mm x 142 mm x 80 mm