Unit Definition (pouce) The pouce is a French "inch" unit, equal to 1/12 pied. Based on the pied de roi, the pouce equals about 1.066 inches or 2.707 centimeters. The word pouce means "thumb" in French.
Unit Definition (nanometer) Equal to 0.000000001 meters (formerly millimicron), or 0.03937 microinch.
Length/Distance 
