Geocart menu class: Lenticular
Meridians: Central meridian is straight and half the length of the Equator. Other meridians are curves, unequally spaced along the Equator and concave toward the central meridian.
Parallels: Equator is straight. Other parallels are curves, unequally spaced along the central meridian and concave toward the nearest pole.
Poles: Curved lines
Symmetry: About the central meridian or the Equator
Decreases along the central meridian and the Equator with distance from the center of the projection
Considerable shape distortion in polar areas
A modification of the Hammer projection; the poles correspond to the 65th parallels on the Hammer, and meridians are repositioned
World maps, such as climatic maps prepared by the U.S. Department of Commerce
Presented by Karlheinz Wagner of Germany in 1941
Hammer (Elliptical) truncated and otherwise modified for the Wagner VII
Description adapted from J.P. Snyder and P.M. Voxland, An Album of Map Projections, U.S. Geological Survey Professional Paper 1453. United States Government Printing Office: 1989.