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)

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

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

Fouling, sometimes called scale, 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

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

Scales (surname)
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
Scale (novel), science fiction novel by Greg Egan