Putniṇš P3´

Classifications

pseudocylindric

Graticule

Meridians: Central meridian is a straight line half as long as the equator. Other meridians are equally spaced portions of parabolas concave toward the central meridian.
Parallels: Equally 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

Constant along any parallel.

Distortion

Free of distortion nowhere. Moderate distortion along equator and in central regions; high distortion elsewhere, mostly weighted toward angular deformation.

Similar projections

Wagner II is similar, but scaled smaller and uses different parallel spacing.
Eckert V uses the same parallel spacing and is similar when scaled up to match in size.

Origin

Presented by Reinholds V. Putniṇš, 1934. Arithmetic mean of plate carrée and Putniṇš P3.

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