Surveying a land means measuring and mapping of a particular land using the latest in GPS technology to perform highly accurate route surveys, boundary surveys, construction layouts, engineering design surveys and many more. A land surveyor is the person who performs all these tasks effectively and efficiently. They are sometimes known as professional surveyors or measures. Land surveyors need to be hired when you need to determine accurate location and measurements of a particular land. Other than that, they can prepare maps, measure points, areas, lines, and elevations, and contour survey for civil engineering construction. However, you need to focus on hiring a surveyor who is trained and methodical and can keep accurate notes, records, and important sketches to provide you accurate information including certification of the work he is going to perform.