California Code, Penal Code - PEN § 330.5

It is further expressly provided that Sections 330.1 to 330.4, inclusive, of this code shall not apply to music machines, weighing machines and machines which vend cigarettes, candy, ice cream, food, confections or other merchandise, in which there is deposited an exact consideration and from which in every case the customer obtains that which he purchases; and it is further expressly provided that with respect to the provisions of Sections 330.1 to 330.4, inclusive, only, of this code, pin ball, and other amusement machines or devices which are predominantly games of skill, whether affording the opportunity of additional chances or free plays or not, are not intended to be and are not included within the term slot machine or device as defined within Sections 330.1 to 330.4, inclusive, of this code.