Putniṇš P5

Classifications

pseudocylindric

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: Equally spaced straight parallel lines, perpendicular to the central meridian.
Poles: Points.
Symmetry: About the central meridian or the equator.

Scale

True along latitudes 21°14´N/S. Constant along any given latitude; same for the latitude of opposite sign. Constant along the central meridian.

Distortion

Similar to other pointed-polar pseudocylindrics but not free of distortion at any point.

Similar projections

Putniṇš P6 equal-area projection (1934) has hyperbolic meridians identical in shape to those of the pointed-polar P2; parallels are straight but are spaced for equal-area.
Putniṇš P2´ projection (1934) has hyperbolic meridians, but the poles are straight lines half the length of the equator. Parallels are equally spaced. The projection is not equal-area.
Putniṇš P6´ equal-area projection (1934) has hyperbolic meridians identical in shape to those of the flat-polar P2´, but parallels are straight lines spaced for equal-area.

Origin

Presented by Reinholds V. Putniṇš of Latvia in 1934.

Description adapted from J.P. Snyder and P.M. Voxland, An Album of Map Projections, U.S. Geological Survey Professional Paper 1453. United States Government Printing Office: 1989.