Scale

A scale model is a representation or copy of an object that is larger or smaller than the actual size of the object being represented.  The most popular are 1:160, 1:144, 1:87, 1:72, 1:48, 1:32 and 1:24.

We use scales in every day life, such as with a map where the scale is the relation between the size of the map and the distances portrayed.  Also see Cartography.

There is also musical scale.  In music, a scale is a collection of musical notes that provides material for part or all of a musical work. Scales are ordered in pitch or pitch class, with their ordering providing a measure of musical distance. Scales differ from modes in that scales do not have a primary or "tonic" note. Thus a single scale can have many different modes, depending on which of its notes is chosen as primary. The distance between two successive notes in a scale is called a "scale step."