{"version":"1.0","type":"link","title":"Normalnull - Newikis","description":"Normalnull of Normal-Null (NN) was van 1879 tot 1992 het referentiepunt voor hoogtemetingen in Duitsland.","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://thumb.wikimedia.org/wikipedia/commons/thumb/7/71/Borne_de_nivellement_Kriegstor.JPG/1280px-Borne_de_nivellement_Kriegstor.JPG","thumbnail_width":1280,"thumbnail_height":960}