This host adopts a two column support with a reasonable mechanical structure to ensure the accuracy of the instrument. The design is simple and elegant, and after installing the force measuring ring, it can be used to determine the unconfined compressive strength, indirect tensile strength (splitting test), bearing ratio of soil and pavement materials, thermal stability and plastic flow resistance of asphalt mixture (including the determination of immersion expansion), stability and flow value (Marshall test), as well as various other tests that require vertical load. It can also be manually operated in the event of power failure or no power supply