Richter scales

• plural

  plural

  The grammatical form denoting more than one person, place, thing, or idea.

  of Richter scale.
  Richter scale

  noun

  a scale, ranging from 1 to 10, for indicating the intensity of an earthquake.

More Suggestions

• Wechsler Scales
• microscale
• Mach scale
• fighter-bomber
• large-scale
• limescale
• macroscale
• minor scale
• overscale