มาเเล้ว!!!เลขเด็ด อ.อุดม ธัญญาหาร 16/6/62
Working to improve developments and make certain that boundaries are set and markers are outlined, survey crews work to measure a site and help ensure that property lines are clearly marked. For many of the contractors that are developing new tracts of land the use of GPS surveying equipment aids in the planning of a new community. Whether building one house or putting up an entire neighborhood, the crews that are using the GPS survey equipment are able to accurately pinpoint the boundaries of a piece of land and determine where to start breaking ground.
from: http://ezinearticles.com/?Measuring-Property-Lines-With-Accuracy&id=6012505
