When you need to communicate colour - visual or instrument color communication - Munsell neutral gray scales will improve colour communication. Munsell neutral colour charts can be used for instrumental calibration, imaging testing or as reflection standards.
The Munsell Neutral Value Scale, also known as a Munsell Gray Scale or Neutral Color Chart is a gray scale fan deck with values of 0.5/ to 9.5/, in quarter step intervals. Munsell notation and % reflectance for CIE Illuminant C printed for each neutral colour chart. Each neutral colour chip is 3” x 2” x ¾” and the complete gray scale charts are available in glossy or matte finish editions.