Convert from braza [Spain] to caliber

Unit Definition (braza [Spain])
The Braza is a traditional unit of distance in Spain and Latin America. In Spain it equals 2 varas, 8 palmos, or about 1.67 meters (5.48 feet or 65.75 inches). In Latin America the Braza tends to be larger. The Argentine Braza is 1.73 meters (5.68 feet or 68.16 inches), and under the Texas definition of the Vara the Braza would be 1.693 meters (5.556 feet or 66.67 inches). The Portuguese Braça is similar, but it equals 10 palmos or about 2.20 meters (7.22 feet or 86.6 inches).

Unit Definition (caliber)
The caliber is a unit used to express the bore diameter of a gun. Traditionally, the diameter is stated in inches, so that ".22 caliber" refers to a pistol having a bore of 0.22 inches (5.588 mm). So the caliber is actually equivalent to the inch. The usage of the term "caliber" is actually now in decline, because bore diameters of many guns are now stated in millimeters. "Caliber" is the American spelling; elsewhere the unit is often spelled "calibre."