equidistant projection
A map projection that preserves distances from a standard point or line. Technical term used in cartography.
An equidistant projection is a map projection that accurately represents distances from a specific point.
正積図法 preserves area, while 正距図法 preserves distance.
正角図法 preserves angles (conformal), while 正距図法 preserves distance.
Compound of 正距 (equidistant) and 図法 (projection method). The exact historical derivation is uncertain; the term is a modern technical coinage.