त्र्यङ्गुलावरं मध्यमावरयोः ॥ कZ_०२.३०.१५ ॥
try-aṅgulāvaraṃ madhyamāvarayoḥ
For the middle and lower grades, the standard is reduced by three aṅgulas (from the first-rate specification).
It creates predictable grade-differentials for valuation, pay, and rationing—limiting discretionary manipulation by stable officials.