Artificial roof horizon mercury jar

A circular iron bottle with threaded stop and pouring hole, for storing the mercury when not in use.

ID:	NAV0006.3
Type:	Artificial roof horizon mercury jar
Display location:	Not on display
Credit:	National Maritime Museum, Greenwich, London
Parts:	Roof artificial horizon (Artificial Mercurial Horizon) Artificial mercurial horizon case (NAV0006.1) Artificial roof horizon folding hood (NAV0006.2) Artificial roof horizon mercury jar (NAV0006.3) Artificial roof horizon mercury jar lid (NAV0006.4) Artificial roof horizon case part (NAV0006.5)