Only transparent graduated measuring cups with pouring lips should be used to measure liquids. The cup should be on a flat surface and all reading done at eye level in order to accurately read the line at the bottom of the meniscus.
The exception is milk, which is read at the top menicus. Viscous liquids such as honey, oil, syrup and molasses have a tendency to stick to the sides as they are poured, so the amount that was measured is diminished by the amount that stuck to the sides. Should this happen, a rubber scraper can be used to remove the remaining contents.
