Surveying
There are different types of surveyor. A construction or building surveyor is the person who has to make sure that buildings are being put up in the correct place and fit in with planning and building laws. A quantity surveyor is the person who keeps track of costs on a building project.  A hydrographic surveyor measures features to do with water, such as rivers, lakes and oceans.  A marine surveyor inspects ships.  A mine surveyor is the person who finds out the position of underground mines, for example gold mines or coal mines.