Calibre [kalʹi-ber]

A mind of no calibre: of no capacity. A mind of great calibre: of large capacity. Calibre is the bore of a gun, and, figuratively, the bore or compass of one’s intelligence.

“The enemy had generally new arms … of uniform caliber.”—Grant: Memoirs, vol. i. chap. xxxix. p. 572.

“We measure men’s calibre by the broadest circle of achievements.”—Chapin: Lessons of Faith, p. 16.