IN ANCIENT times, objects were often weighed on a beam scale. It usually consisted of a horizontal beam, or bar, that pivoted on a peg at its center.
قَدِيمًا ،‏ كَانَ ثِقْلُ ٱلشَّيْءِ يُقَدَّرُ عَادَةً بِمِيزَانٍ لَهُ ذِرَاعٌ أُفُقِيَّةٌ تَرْتَكِزُ عَلَى وَتَدٍ فِي ٱلْوَسَطِ .‏