This is the transverse of the Normal Equal Area Cylindrical projection, proposed by Lambert in 1772. The central meridian is a straight line.

Meridians 90 degrees from the central meridian are also straight lines. The Equator is a straight line. All other parallels and meridians are complex curves.

The longitude of true scale is the central meridian or along two lines of longitude equally spaced from the central meridian.

Area is not distorted anywhere on this projection.