Gall Stereographic

Producer Field Guide

HGD_Product
Producer Field Guide
HGD_Portfolio_Suite
Producer

Gall Stereographic projection was created in 1855. The two standard parallels are located at 45° N and 45° S. This projection is used for world maps.

Construction

Cylinder

Property

Compromise

Meridians

Meridians are straight lines that are equally spaced.

Parallels

Parallels are straight lines that have increased space with distance from the Equator.

Graticule spacing

All meridians and parallels are linear.

Linear scale

"Scale is true in all directions along latitudes 45° N and S. Scale is constant along parallels and is symmetrical around the Equator. Distances are compressed between latitudes 45° N and S, and expanded beyond them" (Environmental Systems Research Institute, 1997).

Uses

World maps only.

Source: Environmental Systems Research Institute, 1997