तस्याः पञ्चपलिकं मण्डलं बद्ध्वा समकरणं कारयेत् ॥ कZ_०२.१९.१३ ॥
tasyāḥ pañcapalikaṃ maṇḍalaṃ baddhvā samakaraṇaṃ kārayet
On it, after fixing a circular piece weighing five palas, he should have the apparatus made level/balanced (i.e., properly equalized).
A mandated calibration step—an explicit procedure to ensure the tool reads correctly before it is used for public transactions.