The application discloses a surveying instrument for
engineering construction, and relates to the technical field of
engineering surveying, which comprises a surveying instrument main body, a controller arranged on the surveying instrument main body, a mounting disc arranged below the surveying instrument main body, a
telescope objective arranged on the surveying instrument main body, a connecting block fixedly arranged on the surface of the surveying instrument main body, a rotating rod pivotally connected to the surface of the connecting block, and a monitoring box fixedly arranged on the surface of the surveying instrument main body. The surveying instrument for
engineering construction can produce controllable bending due to the difference in
thermal expansion coefficients between the upper and lower
layers of the
bimetallic strip, and can double-protect the surveying instrument main body under the linkage cooperation of multiple structures in a high-temperature state without manual intervention. The whole
protection mechanism can operate autonomously, can avoid problems such as lens deformation and
coating failure of the
telescope objective caused by continuous heat
radiation, can avoid the performance degradation of the surveying instrument main body caused by overheating of circuit elements, and can significantly prolong the service life of the surveying instrument main body.