However, given the geometry of a sundial, these maps may well have been based on the similar central cylindrical projection, a limiting case of the gnomonic projection, which is the basis for a sundial.
Hak id ijja awen, akayăd n tagămšakt tan sundial, karti tan tin addobăt as iday nat fal asukni n ijan immik n silindir olahan, tazăzzkut n asukni wan gnomonic eqqălan tăsedit tan sudial