General

Used to represent the entire Earth in a rectangular frame. Popular for world maps.

Looks like Mercator but is not useful for navigation. Displays poles as straight lines.

Not equal area, equidistant, conformal, or perspective.

Directions

True only along the equator.

Distances

True only along the equator.

In high latitudes, distortion is extreme.

Scale

Avoids some of the scale exaggerations of Mercator, but distorts both shapes and areas.

Areas

Distorted.

In high latitudes, distortion is extreme.

Shapes

Distorted.

In high latitudes, distortion is extreme.

Type

Cylindrical

Mathematically projected onto a cylinder tangent at the Equator

History

Presented by O.M. Miller in 1942.

Note

Not directly supported. Maps must be transformed before being used.

(United States Geological Survey, n.d.)