--- gonvert-0.2.33.old/gonvert
+++ gonvert-0.2.33/gonvert
@@ -1760,6 +1760,8 @@
 			[(m,2.13247*1.00138*1.31962/1e15),'',''],
 		_(u"digit | digitus"):
 			[(m,0.018542),'',_(u"A finger's breadth, commonly estimated to be three fourths of an inch.")],
+		_(u"potrzebie"):
+			[(m,(2.263348517438173216473/1e3)),'',_(u"Basic unit of distance in Donald Knuth's Potrzebie System of Weights and Measures.")],
 		_(u"decimeter"):
 			[(m,1.0e-1),"dm","""The tenth part of a meter; a measure of length equal to rather more than 3.937 of an inch."""],
 		_(u"diamond (Typographical)"):