topographical survey of the terrain by a surveyor

accuracy alidade and angle appliance assistant cadastral cadastre commands construction corner dirt distance earth earthwork geodesist geodesy geodetics gives ground groundworker job land laser layout length level management marker marking measurement measurements measuring meterage metering optics pioneering planning precision prism prospecting protractor rangefinder ray remove services site space station survey surveying surveyor takes telescope terrain theodolite topographic topographical topography total work works