Process of Adjusting the Low Latitude Meridian Circle (LLMC)

The process of adjusting the LLMC is described in this paper, which starts from the initial adjustment to the fine adjustment and from solving some obvious problems to discovering some later ones. Based on the sufficient comprehension of correctness of the new method for eachinst rumental error measurement, and being in the condition that the instrument has been made and the large-scale modif ication can not be done, we have improved on some parts and treated others in a circular manner. This makes the inst rument in the concrete level of technology and manufacturing accuracy close to the observation precision that should reach af tera new error theory is adopted.