Vintage 'Tables Of Computed Altitude And Azimuth' 2 x Reference Books

Printed by the London Hydrographic Department, Admiralty

Volume IV, 1951, 363 pagesLatitude 45 - 59 degrees

Volume V, 1952, 363 pagesLatitudes 60 - 74 degrees

Such tables are used with a sextant, to canculate your position at seas.

Good condition for age, with some wear, marks and discolouration.