The cells are two degrees by two degrees.
Cities are shown by circular dots with their names.
Coastlines are not indicated.
The qibla can be read from the markings at the edge of the upper latitude.
The distance rule is graduated according to the sine of the spherical distance.
The meridians are parallel straight lines perpendicular to the base latitude and spaced according to the sine of the difference in longitude, modulated by the cosine of the center latitude.
The parallels should be elliptic curves that converge at 90o. Thus a world map again looks strange, with an overlap.