Russian-English translations for накипь

• fur
• limescale
• scale
  Please rate your experience on a scale from 1 to 10.
  The magnitude of an earthquake is measured on the open-ended Richter scale.
  The Holocaust was insanity on an enormous scale.
• scum
  During smelting, scum rises to the surface and is then removed by the smelter
  These organisms form scum in large quantities
  People who sell used-up pens are scum, just total low-lives