This Elcometer 2050 High Precision Grindometer is a single channel precision gauge used to determine particle size and fineness of grind for many materials including paints, pigments, inks, coatings, chocolates and other similar products.
As ink particles are so fine, the two grooves of the gauge have a gentle gradient allowing a scale of 2.5μm for better resolution.
The groove width is 25mm (0.98”) and the groove length is 165mm (6.5”). The NPIRI scale is displayed alongside the microns scale. The NPIRI gauge and its scraper are made of hardened stainless steel.