A Soil Compaction Tester is a device used to measure the density and compaction of soil. It helps determine how well the soil can support structures, roads, and other construction projects. By assessing soil compaction, engineers can ensure that the ground is stable and safe for building. These testers come in various forms, including nuclear density gauges and mechanical compaction meters. They provide essential data that guides construction practices, helping to prevent issues like settling or shifting. Proper soil compaction is crucial for the longevity and safety of any construction project.