Grindometers or Fineness of Grind Gauges are precision instruments to determine particle size and fineness of many materials like paints, lacquers, pigments, filler, chocolate etc..

Most TQC Sheen Grindometers have double grooves with graded slopes graduated in three different parameters: µm (microns), NS (Hegman) and PCU (North). Gauge and beveled scraper are made of hardened stainless steel and have an accuracy of 2 µm.