BLNUHR: Python & Qt rendition of Berlin's quantity didactics clock blnuhr: Python & Qt rendition of Berlin's quantity didactics clock docs:http://blnuhr.readthedocs.org git:https://github.com/prjemian/blnuhr/ citation: http://www.surveyor.in-berlin.de/berlin/uhr/indexe.html The Berlin quantity didactics clock