अष्टशताङ्गुलं धनुः पथिप्राकारमानं पौरुषं चाग्निचित्यानाम् ॥ कZ_०२.२०.१९ ॥
aṣṭaśatāṅgulaṃ dhanuḥ pathiprākāramānaṃ pauruṣaṃ cāgnicityānām
Un dhanu vaut huit cents aṅgulas ; c’est la mesure étalon pour les routes (pathi) et les remparts/murs (prākāra), et aussi l’étalon pauruṣa pour les constructions d’autels du feu (agnicityā).
They enable consistent planning and auditing of macro-projects (roads, walls), where small-unit counting would be slow and easier to manipulate.