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Putniṇš P1




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.


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


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.


Presented by Reinholds V. Putniṇš, 1934.

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