Mechanical compaction meters are devices used to measure the density and compaction of soil or other materials during construction projects. They help ensure that the ground is adequately compacted to support structures, preventing future settling or instability. These meters typically use a spring-loaded mechanism to assess the resistance of the material being tested. The readings from mechanical compaction meters guide engineers and construction workers in achieving the desired compaction levels. By providing immediate feedback, these tools help maintain quality control on-site, ensuring that the foundation meets safety and performance standards for structures like buildings and roads.