'oH  DIchDaq  taH square  je folded double; a span { Note: A span  ghaH the length  vo' the tip  vo' the thumb  Daq the tip  vo' the  mach finger  ghorgh the  ghop  ghaH stretched  pa' (about 9 inches  joq 22.8 cm.) }   DIchDaq  taH its length  vo'  'oH,  je a span its    breadth.