Land Surveying, mainly embracing land, aerial, hydrographical and satellite surveying, is the science of measuring, recording and reproducing to scale, on plan or other forms, the shape, size and relative vertical or horizontal position of any or artificial feature on earth's surface, above it, and even below.

The Professional Land Surveyor's role, by virtue of his education and training is:

• To conduct or supervise the conduct of any survey operation, calculations of the survey data, their analysis and the eventual production of maps, plans or charts, with reports and recommendations, if any.
• To act as a consultant advising his clients on the optimum choice of survey schedules, logistics, methods, instrumentation, cost, etc., and hence the most economical combination to manage land infomation systems.