A Troughton & Simms Admiralty Pattern Station Pointer No8/05 with a copy of On The Station Pointer And The Manner Of Fixing A Ship's Position By Its Aid - published by order of The Lord Commissioners of the Admiralty, 1903, in mahogany carrying case; A Battenberg Mk II Course Indicator on carrying case; and an 18in (46cm) brass roller parallel ruler (3)