तस्मादेकान्तरावरा आषडन्तरादिति सप्त रथाः ॥ कZ_०२.३३.०४ ॥
tasmād ekāntarāvarā ā ṣaḍantarād iti sapta rathāḥ
From that standard, there are seven chariots—graded from one antara less up to six antara less.
It creates a controlled product line: different missions get different models while keeping design logic unified for production and audit.
Commanders can requisition a known class of chariot with predictable performance and maintenance needs.