Tula तुला

Ancient Sanskrit word Tula (तुला) is the zodiac sign Libra. Tula literally refers to balance, scale, likeness, equal measure or weight.

Reference of Tula is found in Shatpath-Brahman (शतपथ-ब्राह्मण), Vajsaneyiya-Sanhita (वाजसनेयि-संहिता) and Manu-Smiriti (मनु-स्मृति) with meanings like balance, weight or compare.
Tula also founds reference in writings of Yagyavalakya (याज्ञवल्क्य) and Mricchkatika (मृच्छकटिका) where Tula signifies to be in a balance or be equal with.
Mention of Tula is also found in Raghuvansh (रघुवंश) and Prasannraghav (प्रसन्नराघव) in which Tula denotes equality and resemblance.
Tula is also mentioned in Varah-Mihir-Brihat-Sanhita (वराह-मिहिर-बृहत्-संहिता), Mahabharata (महाभारत) and Sushrut where Tula is used for a kind of measure.