An Etymological Dictionary of the German Language/Annotated/Scheffel
Scheffel, masculine, ‘crown (of the head), vertex,’ from Middle High German scheitel, Old High German sceitila, feminine, ‘vertex, crown, parting of the hair from the crown to the forehead'; corresponding to Dutch (haar) scheel, Middle Low German schédel. Allied to scheiden; literally ‘part of the head where the hairs separate, i.e., where they are parted to either side.’ Akin to Anglo-Saxon sčęâda, ‘crown,’ English to shed.