Classifications
pseudocylindric
equal-area
Graticule
Meridians: Central meridian is a straight line half as long as the equator. Other meridians are equally spaced portions of ellipses concave toward the central meridian.
Parallels: Unequally spaced straight parallel lines. Perpendicular to the central meridian.
Poles: Points.
Symmetry: About the central meridian or the equator.
Scale
Correct along 37°28′N/S parallels. Constant along any given latitude; same for the latitude of opposite sign.
Distortion
Free of distortion only at 37°28′N/S on central meridian. Distortion is low along equator and most of the central meridian up to mid latitudes.
Similar projections
Practically identical to uninterrupted Boggs eumorphic.
Similar to sinusoidal, Craster parabolic, many others.
Origin
Presented by Reinholds V. Putniṇš, 1934.