Significance

Star identifier used in air navigation. It gives the positions of all stars included in both American and British Air Almanacs

Physical description

Rude star identifier with hydrographic office modifications, A-N type 1, with seven plastic transparent overlays, start and lunar location sheet, US Navy, circular, in vinyl cover

Inscriptions & markings

Rude star identifier with hydrographic office modifications, A-N type 1, Hydrographic Office No 2102-C