Ravenna Township, Portage County, Ohio - Property Map, 1874 Size:18in x 16in Worcester 1760–1848 London - Artist

Worcester 1760–1848 London - Artist Nationality: British - Original Medium

0 miles above tidewater (above Lock 44)

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

Kamloops and Lytton sheet : west of sixth & seventh meridians : map showing disposition of lands

Cabella Ligure 1749–1790 Genoa - Artist Nationality: Italian - Original Medium

Ravenna Township, Portage County, Ohio - Property Map, 1874 Size:18in x 16in Worcester 1760–1848 London - ArtistMade to order print of Ravenna Township, Portage County, Ohio property map from 1874. A historical map reproduction for wall art, offices, studies, and collectors of Ohio local history.