World on Mercator's Projection - Nautical Chart, 1823 Historical Map Print Size:44in x 39in and the east-west position of

and the east-west position of a ship was calculated using a variety of methods including astronomical observations (comparison of the time on ship of a predictable astronomical event with the time it would have been visible at a prime meridian) and maritime clocks (the use of two clocks

Old Fraunce's Tavern

named for the bluff on which it is situated

yellow and blue pastels to define county and state boundaries

[Plan of Boston neck]

World on Mercator's Projection - Nautical Chart, 1823 Historical Map Print Size:44in x 39in and the east-west position ofMade to order print of World on Mercator's Projection from Tanner's 1823 American Atlas. A historical map reproduction for wall art, offices, studies, and collectors.