Device and method for measuring elevation of prefabricated stand column in limited installation space

The invention relates to a device and method for measuring the elevation of a prefabricated stand column in a limited installation space. A polytetrafluoroethylene plate component is cushioned on the top surface of a lower section stand column and used for adjusting the elevation and flatness of a reference surface; the vernier caliper is used for checking the thickness of the PTFE plate component and measuring the height of a required pad; the reflection measuring mark is adhered to the column body of the upper section of the upright column and is used for marking a measuring point target of elevation measurement; the tripod is used for erecting a measuring robot; the measuring robot is erected at the stable position of the periphery of the foundation pit and used for measuring the elevation of the stand column. The invention can solve the problems that the space is limited when the upper section of the prefabricated stand column is installed and the leveling cannot be applied to elevation measurement. A tra