Posts tagged Geodetic Control Network

Steel Pin “Monuments” Important to GIS; Surveyors’ Group Agrees to Maintenanc...

Most people are familiar with the steel pins or “monuments” land surveyors put in the ground to mark corners of property lines. But, in the world of computerized mapping, these monuments can hold an even more important purpose — specific longitude and latitude coordinates on the earth’s surface. But, who decides which pins to use […]