Classifications
pseudocylindric
equal-area
Graticule
Meridians: Complex curves. By design, the 20°E/W meridians cross the equator at 0.85 the distance of the 20° parallel from the equator.
Parallels: Straight parallel lines. By design, the 80° parallels are ⅓ the width of the equator.
Poles: Points.
Symmetry: About the central meridian and the equator.
Distortion
Free of distortion at 32°6′N/S on central meridian.
Similar projections
Kavrayskiy V is very similar. Foucaut equal-area has similar shape, but more extreme width to height ratio.
Origin
Concept by Webster McBryde and mathematical development by Paul D. Thomas, 1949.