तुलामूल्यं त्रिभागः ॥ कZ_०२.१९.३९ ॥
tulāmūlyaṃ tribhāgaḥ
The fee/value for a balance (tulā-mūlya) shall be one-third (i.e., assessed at a third-rate as specified in the schedule).
Different instruments have different verification complexity and fraud risk; differential pricing aligns administrative cost and enforcement intensity with the device type.