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1.0NGIhttps://www.ngi.be/websiteGérard Frèrehttps://www.ngi.be/website/author/gerard-frere/Tweede Algemene Waterpassing - NGIrich600338<blockquote class="wp-embedded-content" data-secret="4uU6IZ6fqx"><a href="https://www.ngi.be/website/tweede-algemene-waterpassing/">Tweede Algemene Waterpassing</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.ngi.be/website/tweede-algemene-waterpassing/embed/#?secret=4uU6IZ6fqx" width="600" height="338" title="“Tweede Algemene Waterpassing” — NGI" data-secret="4uU6IZ6fqx" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
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De Tweede Algemene Waterpassing (TAW), die van 1947 tot 1968 werd uitgevoerd, omvat zowat 17.000 merktekens die over het hele land verspreid zijn. De re-iteratie van dat net werd van 1981 tot 2000 uitgevoerd. Tussen 2005 en 2017 werden delen van dit netwerk voor de derde keer gemeten. Telkens werd de techniek van optische waterpassing...