Scale or scales may refer to:

Mathematics

Scale (descriptive set theory) In the mathematical discipline of descriptive set theory, a scale is a certain kind of object defined on a set (mathematics), set of point (mathematics), points in some Polish space (for example, a scale might be defined on a set of real numbers). ...

, 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 The long and short scales are two power of 10, powers of ten number naming systems that are consistent with each other for smaller order of magnitude, numbers, but are contradictory for larger numbers. Other numbering systems, particularly ...

, 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 A scale or balance is a device used to measure weight or mass. These are also known as mass scales, weight scales, mass balances, massometers, and weight balances. The traditional scale consists of two plates or bowls suspended at equal d ...

, 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) In music theory, a scale is "any consecutive series of notes that form a progression between one note and its octave", typically by order of pitch or fundamental frequency. The word "scale" originates from the Latin ''scala'', which literal ...

, 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

Film and television

* ''Scale'' (film), an animated short film directed by Joseph Pierce * ''Scales'' (film), a 2019 Saudi Arabian film * "Scales" (''The Cape''), a 2011 television episode

Science

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 Trichomes (; ) are fine outgrowths or appendages on plants, algae, lichens, and certain protists. They are of diverse structure and function. Examples are hairs, glandular hairs, scales, and papillae. A covering of any kind of hair on a plant ...

, 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 rating scale is a set of categories designed to obtain information about a quantitative property, quantitative or a Qualitative data, qualitative attribute. In the social sciences, particularly psychology, common examples are the Likert scale, L ...

, a type of informational measurement scale * Scale (analytical tool), a concept in the study of complex systems and hierarchy theory *

Scale (social sciences) In the social sciences, scaling is the process of measuring or ordering entities with respect to quantitative attributes or traits. For example, a scaling technique might involve estimating individuals' levels of extraversion, or the perceived qu ...

, 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, Aldingham, Cumbria, England, a village * ''The Scales'', the initial climb of the Chilkoot Pass

Other uses

* 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