special device level for surveyor builders, geodesy equipment close up in front of a ground work with people on blurred backgrou

angulation appliance archaeology backgrou background blurred builder builders building cartography check close construction contractor copy device dig engineer equipment exact exam front geodesy geography ground highway horizontal industry inspection instrument land level man measure optical outdoor outdoors people plan point position precision road site space special station survey surveyor tacheometer technology theodolite tool topographic transit tripod unit work workplace