Classifications
lenticular
equal-area
Graticule
Symmetry: About the central meridian and the equator.
Distortion
Free of distortion at 25°5′W/E on the equator. Distortion is low inward of about the 45° meridians and increases rapidly outside of them.
Similar projections
Dietrich-Hammer homotopy limits to Dietrich-Kitada.
Origin
Formulation is due to Kōzō Kitada, 1957, who reconstructed an apparently equal-area projection he found used in maps in a 1927 German text, Grundzüge der allgemeinen Wirtschaftsgeographie, by Bruno Dietrich. The projection was probably developed by Karlheinz Wagner.