In order to sum up experiences and managed to correctly and rapidly set casing series down into the borehole, proceeding from the exact requirements to on-site operation and according to the set-down casing procedures, it gave a detailed introduction of the overall process and the specific operation method for measuring casing, setting casing series down into the hole (surface c.

Because of the drawing complexity in application, this paper puts forward a new method , the quick measure ,which can be for the use of teaching, training and competition.

1), Quan Rongyan touched on the relationship between land surveys and the community self-monitoring system in Huizhuo in Late Ming from the perspectives of land measure units and the choice and transfer of personnel, and to a certain degree clarified some long-time misunderstandings in the Ming studies.