Artificial Mercurial Horizon

A rectangular wooden trough fitted a tin tray, and a brass-framed roof-shaped cover. Two sides of the cover have clear glass panels, at an angle of 90 degrees. Accompanying the instrument is a jar for storing mercury, which is missing.

The artificial horizon is contained in a fitted wooden box, with a trade label in the lid for W. Watson and Son, 313 High Holborn, London.

Object Details

ID: NAV1959
Collection: Astronomical and navigational instruments
Type: Artificial Mercurial Horizon
Display location: Not on display
Creator: W. Watson & Sons; W. Watson & Son
Date made: circa 1869-72
Credit: National Maritime Museum, Greenwich, London
Measurements: Glass screen: 114 x 165 x 92 mm
Parts: Artificial Mercurial Horizon