A cased British Royal Navy 10 x 70 binocular gunsight by Ross of London, 1946

A cased British Royal Navy 10 x 70 binocular gunsight by Ross of London, 1946,
of the type used on British warships in World War II, military grade steel case painted khaki, marked with Patent No.'G.367 No.123755' and bearing War Dept broad-arrow and National Physical Laboratory number 'NP46', with focus adjust controls and lens filter, lacking eye-cups, contained in original green painted wooden case, with steel mounting plate, offered together with a Gandolfi of London wooden adjustable tripod.