Scale

Scale or scales may refer to:

Mathematics

 * Scale (descriptive set theory), an object defined on a set of points
 * Scale (ratio), the ratio of a linear dimension of a model to the corresponding dimension of the original
 * Scale factor, a number which scales, or multiplies, some quantity
 * Long and short scales, how powers of ten are named and grouped in large numbers
 * Scale parameter, a description of the spread or dispersion of a probability distribution
 * Feature scaling, a method used to normalize the range of independent variables or features of data
 * Scale (analytical tool)

Measurements

 * Scale (map), the ratio of the distance on a map to the corresponding actual distance
 * Scale (geography)
 * Weighing scale, an instrument used to measure mass
 * Scale (ratio), the ratio of the linear dimension of the model to the same dimension of the original
 * Spatial scale, a classification of sizes
 * Scale ruler, a tool for measuring lengths and transferring measurements at a fixed ratio of length
 * Vernier scale, the scale on calipers

Music

 * Scale (music), a sequence of ordered musical notes
 * Scale (string instruments), the sounding length of the strings of an instrument
 * Scale (album), a 2006 album by electronic artist Matthew Herbert
 * "The Scale", a song from Our Love to Admire by Interpol

Cinema

 * Scale (film), an animated short film directed by Joseph Pierce

Biology

 * Scale (zoology), a rigid plate which grows out of the skin of various animals
 * Fish scale
 * Reptile scale
 * Snake scale
 * Scale (dermatology), a secondary skin lesion in humans that resembles animal scales
 * Scale (insect anatomy), a feature of the wings of moths and butterflies
 * Scale, a type of trichome, any flat epidermal outgrowth in botany
 * Bulb scale, the storage layers of a plant bulb
 * Scale insect, a waxy coated animal that resembles a fish scale

Chemistry and materials science

 * Fouling, sometimes called, a buildup of unwanted substances on a submerged surface
 * Limescale, a hard, chalky deposit that often builds up inside kettles, hot water boilers, and pipework
 * Mill scale, the flaky surface on hot rolled steel, consisting of iron oxides
 * Scale (chemistry), the range of mass or volume of a chemical reaction or process

Social sciences

 * Rating scale, a type of informational measurement scale
 * Scale (analytical tool), a concept in the study of complex systems and hierarchy theory
 * Scale (social sciences), a tool for ordering entities by quantitative attributes

Places

 * Scales, California, a community in the United States
 * Scales, Lancashire, part of the village of Newton-with-Scales
 * Scales, near Kirkoswald, Cumbria, a hamlet
 * Scales, South Lakeland, Cumbria, England, a village
 * The Scales, the initial climb of the Chilkoot Pass

Other uses

 * Scales (surname)
 * Scales (film), a 2019 Saudi Arabian film
 * Baron Scales, a title in the Peerage of England
 * Libra (constellation), also known as "the scales", or the namesake astrological sign
 * Mizan (Scale in English), a treatise on Islam by Javed Ahmed Ghamidi
 * Pay scale, a system or structure of compensation for work
 * Scale armour, an early form of armor
 * Southern California Linux Expo, an open-source software conference held in Los Angeles, California