Marshall flow value calibration device with multi-point automatic measurement function

The utility model relates to a Marshall flow value calibration device with a multi-point automatic measurement function, which is characterized in that a fixed ring is arranged at the top end of a shell, a measured moving rod is arranged in the fixed ring, a reel is transversely arranged on the shell in a penetrating manner, one end of the reel extends out of the shell and is connected with a lifting knob, a spring is connected to a measurement unit, and the measurement unit is connected with a measuring unit. The pull rope is respectively connected with the lifting knob and the measuring unit; the top end of the digital displacement sensor serves as a working face, the measured moving rod makes contact with the working face, the digital displacement sensor is connected to the digital displayer, and the digital displayer is connected with the reset key, the power switch and the battery. The device is simple and reasonable in structure and convenient to operate, can realize multi-point automatic measurement, m