Convert gigameter to shackle (Britain 1949)
Selected category: length.
Definition and details for gigameter:
Gigameter (Gm) is a metric unit of distance equal to one million kilometers (or 109m). This unit would be a good yardstick for the inner Solar System.
Definition and details for shackle (Britain 1949):
In 1949 the Royal Navy redefined shackle as 90 feet or 27.432 meters.