Unit Definition (alen [Scandinavia])
The Alen is a traditional Scandinavian unit of distance, which is very similar to the North German Elle: which is roughly equal to 2 feet or 60 centimeters.

Unit Definition (gigameter)
The Gigameter (or Gigametre) a metric unit of distance equal to one million kilometers or about 621,371.2 miles. It is seldom used, but this unit would be a good yardstick for the inner Solar System: the distance from the earth to the sun is about 149.60 gigameters.