Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Plumb line position-en#Sense
Lodrätt läge-sv#Sense
Position verticale-fr#Sense
Loodpositie-nl#Sense
Vertikal position-sv#Sense
Κατακόρυφη θέση-el#Sense
Seigerlage-de#Sense
Plumb position-en#Sense
Posição vertical-pt#Sense