theodolite is used to measure both horizontal and vertical angles. Theodolites are an important tool for individuals specializing in triangulation networks and geolocation work. Beyond the fields of surveying and engineering, our theodolites for sale are useful in creating floor layouts and working with concrete slabs. You may also need a theodolite for work on golf courses, swimming pools, landscaping, or road design. Survey theodolites can be used to measure elevations, but automatic levels will do this more accurately over long distances.