Systems of representation

• Duraton scale, an ordering of time intervals from shortest to longest
• Measurement, referring to the size of buildings or other structures
• Scalability, a system's capacity to adapt to changes in size and complexity
• Scale factor, a number which scales, or multiplies, some quantity
• Scale factor (Universe), a function of time which represents the expansion of the universe
• Scale (map)
• Scale parameter, a numerical parameter in statistics
• Scale (ratio)
• Scale (social sciences)
• Scale (spatial), an informal system of general size categorizations
• Scaling (geometry)

Measuring implements

• Architect's scale, a ruler-like device which facilitates the production of technical drawings
• Engineer's scale, a ruler-like device similar to the Architect's scale
• Weighing scale, an instrument used in measuring weight

Miniaturization

• Scale model
• Scale (model railroading)

Rigid plates

• Scale armour, protective garments similar to animal scales
• Scale insect, a waxy coated animal that resembles a fish scale
• Scale (zoology), a rigid plate which grows out of the skin of some animals, such as fish and snakes

Music

• Scale (music), a domain of musical notes
• Scale (string instruments), the sounding length of the strings of an instrument
• Scale, an album by electronic artist Matthew Herbert

Places

• Constellation Libra, known as "the scale"
• Scales, South Lakeland, a village in Cumbria, England

Other

• buildup of unwanted substances, sometimes called "scale", on hard surfaces, such as the inside of a pipe
• [[Mizan (Scale or Balance in English), a treatise on Islam by Javed Ahmed Ghamidi
• Southern California Linux Expo, an Open-Source Software conference held in Los Angeles