Half marathon notice

Visitor notice: On Sunday 4 March Cutty Sark and the museum car park will be closed for the Vitality Big Half Marathon. All other museums will be open as normal and DLR and rail links will be running. Find out about road closures

Essential information

Opening times: 
National Maritime Museum, Second floor, Forgotten Fighters gallery

Locate this rangefinder on a wooden mount.

A rangefinder is used to calculate distances. On a warship this might be to calculate where to point the guns to ensure the missiles hit their targets, especially over long distances.

The label of this rangefinder says: 'FA Register no. 174. Dispatched to HM Dockyard in 1898'.

Type FA means it is the same design as the first rangefinder ordered by the Admiralty.