Putniṇš P1

Classifications

pseudocylindric

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: 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 nowhere. Distortion is low and balanced between angular deformation and flation along equator and central meridian. Remaining distortion is largely in the form of angular deformation.

Similar projections

Sinusoidal is equal-area and uses sinusoids for meridians.

Origin

Presented by Reinholds V. Putniṇš, 1934.

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