SYSTEM FOR REVISING NUMERICAL MAP INCREASING DENSITY BASED ON GIS

摘要

The present invention relates to a digital map correction system with increased accuracy based on GIS and, more specifically, to a digital map correction system with increased accuracy based on GIS capable of easily maintaining and smoothly operating a photographing auxiliary apparatus as a lubricant is easily supplied to the photographing auxiliary apparatus when photographing, and easily obtaining digital information as a vertical position of a camera can be adjusted. The present invention has effects of stably supplying a lubricant supplied for smooth operation of a screw shaft and preventing waste of the supplied lubricant; and preventing a drive stop phenomenon of the screw shaft caused by fixation by quickly discharging and removing the lubricant in excess supply.