magnetic compass 
Magnetkompass 
base plate 
Bodenplatte 
baseline 
Markierungslinie 
scale 
Skala 
pivot 
Pinne 
magnetic needle 
Magnetnadel 
sighting line 
Sichtlinie 
sight 
Visier 
graduated dial 
Gradeinteilung 
compass card 
Kompassrose 
compass meridian line 
Meridianlinie 
edge 
Kante 
cover 
Deckel 
sighting mirror 
Spiegel 