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Gravity surveying , airborne gravity survey A regional gravity survey undertaken from the air. Such surveys are now rapid and precise because of the development of gravi… Surveying , SURVEYING. Using little more than a compass and a 66-foot chain, early American surveyors set out early to chart the United States of America. Survey… Survey , Survey Social scientists investigate people who lived in the past or are living in the present. Surveys are one tool they use to gather information a… Surveying Instruments , Surveying is the apportionment of land by measuring and mapping. It is employed to determine boundaries and property lines, and to plan construction… Surveys , SURVEYS Most surveys have several common characteristics (Fowler). Their purpose is to generate information that statistically summarizes issues of i… BASE LINE , BASE LINE Survey line used in the government survey to establish township lines. Horizontal elevation line used as a centerline in a highway survey.
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