A Compressive Testing Machine is a device used to measure the compressive strength of materials, such as concrete, metals, and plastics. It applies a controlled load to a sample until it deforms or fails, allowing engineers to assess the material's durability and performance under pressure. These machines typically consist of a loading frame, a hydraulic system, and a control panel. They are essential in construction and manufacturing industries, ensuring that materials meet safety and quality standards. The results help in designing structures and products that can withstand various forces during their use.