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 hyperbolas concave toward the central meridian.
Parallels: Unequally spaced straight parallel lines. Perpendicular to the central meridian.
Poles: Lines half the length of the equator.
Symmetry: About the central meridian or the equator.
Scale
Correct along 50°40′N/S parallels. Constant along any parallel.
Distortion
Free of distortion at 50°40′N/S on central meridian. Moderate distortion along equator and in central regions; high distortion elsewhere.
Similar projections
Wagner I is similar but has more rounded “shoulders”.
Eckert VI is practically identical.
Origin
Presented by Reinholds V. Putniṇš, 1934.