alen or aln

1

In Denmark and Norway, a premetric unit of length = 2 fod = 24 tommer.

The Danish alen in general use before 1683, the sjællandske alen, has been estimated by Nørlund at 63.26 cm. Reforms in 1683 made the alen = 2 Rhineland Fuss, about 62.814 centimeters. A subsequent decree, in 1698, does not repeat the Rhineland Fuss equivalency, but refers only to the "original iron alen". 

In 1835¹ the alen was shortened in order to harmonize Danish and Prussian measures, becoming 62.771 centimeters (about 24.7 inches). chart symbol

In Norway, about 62.75 centimeters.

1. Resolution 36 1835.

N. E. Nørlund.

2

In Sweden, a premetric unit of length = 2 fot = 20 tommer. From 10 March 1665, about 59.3784 centimeters. After 1855, 59.3812 cm.

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