I recast the well-known axiom system of quantum mechanics (the Dirac calculus) in the language of Continuous Logic. The main theorem states that along with the canonical continuous model the axioms have approximate finite models of large sizes, in fact the continuous model is isomorphic to an ultraproduct of finite models. I also analyse the continuous logic quantifier corresponding to Dirac integration and show that in finite context it has two versions, local and global, which coincide on Gaussian wave-functions.