English: The Lambert and Gall are equal area projections. The green curves commencing at k=1 are for the Lambert: the parallel scale (k) increases from k=1 at the equator to infinity at the pole and the meridian scale decreases from 1 at the equator to zero at the pole. The product hk=1 guarantees equal area. In the Gall (red) the parallel scale increases (to infinity)from k=0.707 at the equator and the meridian scale decreases from k=1.414 at the equator to zero at the pole. Both Gall scales are equal, h=k=1, on the standard parallel (defined by k=1) at a latitude of 45 degrees.