Similar
Sanborn Fire Insurance Map from Norwich, Chenango County, New York
Bromley Manhattan Plate 178 publ. 1927
Sanborn Fire Insurance Map from Tulare, Tulare County, California
Sanborn Fire Insurance Map from Frankfort, Clinton County, Indiana
Sanborn Fire Insurance Map from Fitchburg, Worcester County, Massachusetts
Sanborn Fire Insurance Map from Trout Creek, Ontonagon County, Michigan
Atti della Societitaliana di scienze naturali e del Museo civico di storia naturale di Milano (1907) (19725570344)
Sanborn Fire Insurance Map from Des Moines, Polk County, Iowa.
Trolley trips through New England (1900) (14593174698)
Related
Plan du port du Callao par les 12. d. de latt. sud suiuant le compas.
Plan de la rade d'Ylo à la cotte du Perou par la latt. de 17. d. 40. m. sud selon le compas.
Plan de l'isle et port de Iquique situé par les 20. d. l2. m. latt. ob. sud selon le compas.
Plan des ports de Copiapo situé par 27 d. latt. sud la variation du compas corrigée.
Plan de l'isle de Sainte Marie par les 37 g. de lattd. S. à la cotte du Chily selon le compas.
Plan of the harbour of Pensacola. - Public domain map
Plan du Port Cavallo, décente de la Nasque à la côtte du Perou par la latt. de 14 d. 55 m. sud, selon le compas qui à 8 d. de naviation NE.
Plan of land at South End, Rockport, Mass.
Plano del puerto del Balparaizo en la mar del sur costa de Chile por 32 grs. 55 mtos. de latd. austral /
Plan du port de Pisco par la latt. de 13 g. 40. m. sud.
Summary
Shows coast of Peru in the region of Pisco.
Relief shown pictorially. Depths shown by soundings.
Oriented with north to the left.
Watermarks: Cluster of grapes; and, indecipherable lettering.
Pen-and-ink and watercolor.
Mounted on cloth backing.
LC Luso-Hispanic World, 703
Available also through the Library of Congress Web site as a raster image.
Maggs number annotated in pencil in lower right margin: 204.
Vault
In the 17th century, maps took a huge leap forward. Mathematical and astronomical knowledge necessary to make accurate measurements had evolved. English mathematicians had perfected triangulation: navigation and surveying by right-angled triangles. Triangulation allowed navigators to set accurate courses and produced accurate land surveys. Seamen learned to correct their compasses for declination and had determined the existence of annual compass variation. Latitude determination was greatly improved with the John Davis quadrant. The measurement of distance sailed at sea was improved by another English invention, the common log. Longitudinal distance between Europe and Québec was determined by solar and lunar eclipses by the Jesuit Bressani in the 1640s and by Jean Deshayes in 1686. With accurate surveys in Europe, the grid of the modern map began to take shape.