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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: Points.
Symmetry: About the central meridian or the equator.

Scale

Correct along equator. Constant along any given latitude; same for the latitude of opposite sign.

Distortion

Free of distortion along equator. Distortion is low along central meridian.

Similar projections

Practically identical to uninterrupted Boggs eumorphic.
Similar to sinusoidal, Craster parabolic, many others.

Origin

Presented by Reinholds V. Putniṇš, 1934.

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