Ferþumlungur

Ferþumlungur was a small one of a total of six historical measures used in Iceland .

The Ferþumlungur can be converted as follows:

• 1 umlungur = 1 square Þumlungur = 6.84 square centimeters

literature

• Günter Scholz, Klaus Vogelsang: Units, symbols, quantities. , Fachbuchverlag, Leipzig 1991, ISBN 978-3-34300-500-0 , p. 125.
• Peter Kurzweil: The Vieweg unit lexicon: formulas and terms from physics, chemistry and technology , Vieweg + Teubner Verlag, 1999, ISBN 978-3-52806-987-2 , pp. 141 and 193