Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/5211003
Is Reference of Hyrräkompassi-fi#Sense
Kreiselkompassanlage-de#Sense
Boussole gyroscopique-fr#Sense
Bussola giroscopica-it#Sense
Gyro compass-en#Sense
Girobussola-it#Sense