The purpose of a transit and builder's level is ________ .

The purpose of a transit and builder's level primarily revolves around checking whether two or more points are level. These instruments are designed to ensure accuracy in leveling during construction projects, which is crucial for the proper alignment and stability of structures. When using a transit or builder's level, the operator can establish a horizontal plane of sight, allowing them to verify if various points on a construction site are at the same elevation. This functionality is fundamental when laying foundations, aligning walls, or installing elements that need to be level, such as floors and ceilings.

In contrast to other potential uses of surveying and leveling equipment, the focus of the transit and builder's level is not primarily on calculating areas or measuring angles. Those tasks typically require different types of instruments and methods. Although determining elevation is part of ensuring that points are level, the main function related to ensuring the horizontal alignment of various construction elements makes the option regarding checking if points are level the most accurate choice.