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| View Original: | Mercator_and_Etzlaub.png (378x381) | |||
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| Keywords: Mercator and Etzlaub.png en This a modified version of File shown in other versions which was taken from website http //www wilhelmkruecken de/Etzlaub/etzlaub htm On the original image the appended Mercator scale is hardly visible Two clearer scales have been added On the left is a version of Mercator adjusted to fit with Erzlaub at 60 degrees The agreement of scale is fortuitous On the right is a Mercator scale adjusted to have the same width as Erzlaub's at the equator The monochrome map has been replaced by a coloured version from http //www wilhelmkruecken de/Etzlaub/etzlaub htm Inverted to make the map recognisable at the expense of making the text inverted The following text is from the original image File Erhard Etzlaub 1511 Sundial miniature map png Miniature map from outside of hinged lid of Etzlaub's 1511 sundial Size is 93x65 mm orientation is South-up no longitudes are given Latitudes printed in grey numbers see right margin were calculated by Krücken 2004 see Source for a Mercator projection of same area and prove that Etzlaub's approach was completely different These maps were designed to adjust sundials called Kompast sic in late medieval German for user's latitude Instructions were given by Etzlaub in Codex ad Compastum Norembergensem which was kept by Staatsbibliothek Munich Germany but seems lost http //www wilhelmkruecken de/Etzlaub/etzlaub htm Creator Erhard Etzlaub with additions by Peter Mercator 2010-08-06 thumb left 200px PD-old-100 Erhard Etzlaub Mercator projections 1511 maps 1510s maps of Africa Old maps of Europe Old sundial charts | ||||
