Editing Scale (section)

===Chemistry and materials science===
* [[Fouling]], sometimes called {{em|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