This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Layout of Ptolemys nd Projection. en blank grid for construction of maps on Ptolemy's second projection Cropped from larger image Text removed Fig Ptolemy's modified spherical projection of the world giving superior likeness of the earth's surface on sheet of paper Though preferable to the conic projection Ptolemy confessed that