Convert from alen [Swedish] to gnat's eye

Unit Definition (alen [Swedish])
The Swedish Alen is slightly shorter than the Scandinavian Alen. It is almost equal to 2 foot, or more precisely equal to 59.38 centimeters (23.38 inches).

Unit Definition (gnat's eye)
The gnat's eye is an idiomatic "unit" of distance; it's common to hear that something is "as small as a gnat's eye". In fact, the eyes of typical gnats tend to have diameters similar in size to a hair's breadth: roughly 100-150 micrometers (0.10-0.15 millimeters).