2 catalogue entries found

Published Date: 2017-04-13T00:00:00Z
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  • Catalogue Entry: Horizontal Control

    Horizontal Control Network is a network of known horizontal geographic positions, referenced to geographic parallels and meridians or to other lines of orientation such as plane...

  • Catalogue Entry: Vertical Control

    A vertical control survey determines elevation with respect to sea level. Each benchmark is linked to an individual description of the location.
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