The Quality of an item, force or element is a number between 1 and 10, where 10 is the highest Quality. Sometimes, the GM needs to make Random Quality Rolls. Rolling one d10 would solve the problem, but you would want the average Quality somewhere close to 5. Using 2d10 would solve the problem in most cases.
Random Quality Roll: 2d10 / 2 (Decimals are rounded down)
Random Quality Rolls should only exceptionally be used in campaigns.