Unit Definition (nanometer) Equal to 0.000000001 meters (formerly millimicron), or 0.03937 microinch.
Unit Definition (zoll [Germany]) The zoll ia a traditional German inch, equal to 1/12 fuss. Originally the zoll was equal to 1.037 inches (about 2.634 centimeters). There's no change in the plural.
Length/Distance 
