General

Suited for large areas that are mainly east-west in extent and that require equal-area representation.

Used for thematic maps.

Maps of adjacent areas can be joined at their edges if they have the same standard parallels and scale.

Not conformal, perspective, or equidistant.

Directions

Reasonably accurate in limited regions.

Distances

True on both standard parallels.

Scale

True only along standard parallels.

The maximum scale error is calculated at 1.25% on a map of the conterminous states with standard parallels of 29.5 degrees North and 45.5 degrees North.

Areas

Proportional to the same areas on Earth.

Type

Conic.

Mathematically projected onto a cone conceptually secant at two standard parallels

History

Presented by H. C. Albers in 1805.

Note

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

(United States Geological Survey, n.d.)