अक्षेषु नान्दीपिनद्धं कारयेत् ॥ कZ_०२.१९.१६ ॥
akṣeṣu nāndīpinaddhaṃ kārayet
Pada titik gandar/paksi, dia hendaklah membuat ikatan/pengunci «nāndī» (nāndī) (iaitu susunan pengikat/pengunci tertentu pada paksi).
Because small mechanical looseness or hidden alterations at the pivot can systematically bias measurements; specifying a fastening standard reduces manipulation and wear-based drift.