द्वादशाङ्गुला वितस्तिः छायापौरुषं च ॥ कZ_०२.२०.१० ॥
dvādaśāṅgulā vitastiḥ chāyāpauruṣaṃ ca
الڤيتاستي (vitasti، الشِّبر) يساوي اثني عشر أنغولا (aṅgula)؛ ويُعرَّف مقياس «رجل الظل» (chāyā-pauruṣa) تبعًا لذلك.
Because uniform base units reduce disputes and corruption in surveying, wage-work measurement, procurement, and tax assessment.
It provides a practical, reproducible field method for estimating standardized height/length relationships during surveying and construction checks.