The Oxford Thesaurus An A-Z Dictionary of Synonyms - calibre n.

1) diameter, size, bore, gauge: You need a .38 calibre bullet to fit a .38 calibre pistol. 2) merit, ability, talent, capability, competence, capacity, quality, strength, stature: They should be playing against a team of their own calibre. 3) degree, measure, stamp, quality: I doubt that you will find anyone of equal calibre to Julia in artistic sensibility.