The maps for this globe are based on originals drawn by Gerardus Mercator, the inventor of Mercator Projection a revolutionary method of translating a spherical chart onto a two-dimensional sheet of paper. This method was used from the 16th Century until the middle of the 20th Century to convert maps of the earth onto a flat surface. The 13-1/2" circumference globe is set in a full meridian with a brushed brass finish, mounted on a distressed wood base with a reproduction 17th Century dry mariner's compass recessed in the center. An authentic replica for science and history buffs. Measures 8-3/4" tall. Weighs 1 lb. 2 oz.