Measuring equipment connecting device of observation pillar

The utility model relates to connection between a specific length baseline measuring device and an observation pillar, in particular to a measuring device connecting device of an observation pillar. The measuring equipment connecting device of the observation pillar comprises a lower connecting piece and an upper connecting piece, the lower connecting piece comprises a threaded connecting structure which is positioned at the bottom of the lower connecting piece and is used for being fixed on the observation pillar; the inserting hole is used for coaxially inserting and fixing the upper connecting piece; the upper connecting piece comprises an inserting column part used for being coaxially inserted and positioned in the inserting hole; the external thread part is positioned at the top of the upper connecting piece and is coaxially connected with measuring equipment provided with a mounting threaded hole; a measuring mark is arranged on the upper end face of the external thread part and used for indicating the