Which of the following tools is commonly used for surveying land?

The total station is a highly advanced instrument commonly used in land surveying because it combines the functions of a theodolite for measuring angles, an electronic distance measuring (EDM) device for calculating distances, and a microprocessor to perform complicated calculations. This versatility allows surveyors to efficiently gather precise measurements, which are critical for creating accurate maps and for various engineering and construction tasks. The total station is capable of storing data and is often used in conjunction with GPS technology, which enhances its functionality in surveying large areas.

While other tools mentioned serve important purposes in surveying, they do not provide the same level of precision and multifunctionality as a total station. The laser level is useful for establishing horizontal planes but does not provide angular measurement capabilities. A surveyor's compass is primarily used for determining directions but lacks the ability to measure distances electronically. The measuring tape is essential for taking manual length measurements but is not equipped to handle the complex calculations and data management that a total station can offer. Thus, the total station stands out as the preferred tool for modern land surveying due to its comprehensive capabilities.