Webster’s Dictionary –

Calibrate: (to fix, check or correct:
(1) the graduations of a measuring instrument.
(2) to find by actual use [as in a fire arm] the ways in which it must be corrected or adjusted for uniformity [as in firing].

Caliber: – figuratively: quality, ability.

This revelation took place on Prayer Mountain nine years ago. The following account of the exchange is shown right from my journal of 2008.