Accuracy in cooking and baking is crucial, especially when dealing with ingredients that must be combined in specific proportions. Pyrex measuring cups typically come with clearly marked measurements in both imperial and metric units, allowing for easy conversions and precise measurements. This precision is especially beneficial in baking, where even a slight deviation can result in a less-than-desirable outcome. With a 3-piece set, which usually includes cups of various sizes (typically 1-cup, 2-cup, and 4-cup), home cooks can measure out a range of ingredients, from flour to broth, with confidence.