Artificial horizon

An artificial horizon believed to have belonged to Cpt John Ross and used on Arctic voyages.  Artificial horizons were used by the navigators of sailing ships when they were becalmed and very often in fog, when the natural horizon was not visible.
Object no :
SRSH001n
Collection :
Sir John Ross
Creator :
NA
Place of Production :
NA
Dimensions :
length 200mm; height 110mm; (max. open 240mm)
Materials :
wood, mercury, glass
Location :
NA
Related site :
Mark Farm, Castle Kennedy
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