This compass was bought by Emerald resident, Karen Alexander, in Europe when she travelled there in the 1980s. Thus it only works in the Northern Hemisphere.An example of personal navigation technology current in the 1980s.Hand-held compass for navigation. Red print on clear plastic. Black dial. Red cord. Suunto brand. 1980s.There is a small ruler of measurements in cm and a scale conversion to metres. Outside the dial: 'A. 10 Finland' Inside the dial: 'SUUNTO'alexander, compass, navigation, suunto