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  2. Mercator projection - Wikipedia

    en.wikipedia.org/wiki/Mercator_projection

    Once again, if Δφ may be read directly from an accurate latitude scale on the map, then the rhumb distance between map points with latitudes φ 1 and φ 2 is given by the above. If there is no such scale then the ruler distances between the end points and the equator, y 1 and y 2 , give the result via an inverse formula:

  3. Module : Location map/data/Northern and Central Europe

    en.wikipedia.org/.../Northern_and_Central_Europe

    Module:Location map/data/Northern and Central Europe is a location map definition used to overlay markers and labels on an Lambert azimuthal equal-area projection map of Northern and Central Europe. The markers are placed by latitude and longitude coordinates on the default map or a similar map image.

  4. Medieval weights and measures - Wikipedia

    en.wikipedia.org/wiki/Medieval_weights_and_measures

    stång – 16 fot, for land measurement; ref – 160 fot, for land measurement, was 100 fot after 1855. stenkast – Stone's throw, approx 50 m, used to this day as an approximate measure. fjärdingsväg – 1 ⁄ 4 mil; skogsmil – Also rast, distance between rests in the woods, approx 5 km. nymil – New mile from 1889, 10 km exactly.

  5. Scale (map) - Wikipedia

    en.wikipedia.org/wiki/Scale_(map)

    A graphical or bar scale. A map would also usually give its scale numerically ("1:50,000", for instance, means that one cm on the map represents 50,000cm of real space, which is 500 meters) A bar scale with the nominal scale expressed as "1:600 000", meaning 1 cm on the map corresponds to 600,000 cm=6 km on the ground.

  6. File:Northern and Central Europe location map.svg - Wikipedia

    en.wikipedia.org/wiki/File:Northern_and_Central...

    English: Location map Northern and Central Europe; Political with state boundaries; Lambert azimuthal equal-area projection Projection: LAEA Europe, EPSG:3035; Longitude of projection center: 10° E; Latitude of projection center: 52° N

  7. Benchmark (surveying) - Wikipedia

    en.wikipedia.org/wiki/Benchmark_(surveying)

    The position and height of each benchmark are shown on large-scale maps. The terms "height" and "elevation" are often used interchangeably, but in many jurisdictions, they have specific meanings; "height" commonly refers to a local or relative difference in the vertical (such as the height of a building), whereas "elevation" refers to the ...

  8. File:Northern-Europe-map.svg - Wikipedia

    en.wikipedia.org/wiki/File:Northern-Europe-map.svg

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  9. Northern Europe - Wikipedia

    en.wikipedia.org/wiki/Northern_Europe

    A composed satellite photograph of islands and continental areas in and surrounding the North Sea and Baltic Sea.. The northern region of Europe has several definitions. A restrictive definition may describe northern Europe as being roughly north of the southern coast of the Baltic Sea, which is about 54°N, or may be based on other geographical factors such as climate and ecology.