SCALE
A specific relative or proportional size or extent of a phenomena as measured through space and/or time.
The proportional relationship between a linear measurement on a map and the distance it represents on the Earth's surface.
Relationship existing between a distance on a map, chart, or photograph and the corresponding distance on the Earth.
The ratio of the length between any two points on a map, plan or section to the actual distance between the same points on the ground or in a cave.
