त्र्यङ्गुलावरं मध्यमावरयोः ॥ कZ_०२.३०.१५ ॥
try-aṅgulāvaraṃ madhyamāvarayoḥ
मध्यमावरयोः उत्तमात् त्र्यङ्गुलावरं प्रमाणम्।
It creates predictable grade-differentials for valuation, pay, and rationing—limiting discretionary manipulation by stable officials.