During leveling operations, what is the purpose of using a dumpy level?

The dumpy level is specifically designed for leveling operations and is essential for measuring elevation changes accurately. This tool helps determine differences in height between various points on a job site, which is critical in construction and civil engineering tasks. By using a dumpy level, operators can ensure that surfaces are level, slopes are appropriate, and all aspects of the construction meet the necessary standards. This precision in measuring elevations directly supports effective project planning, layout, and execution. Utilizing a dumpy level facilitates the smooth progression of grading, drainage, and foundation work, ensuring the structural integrity of the project. The other options, while relevant in construction, do not directly relate to the primary function of a dumpy level.