it falls under the definition of a "blackjack" which is listed in the statute you cite. in the CA code Section 7500.01 it states the following
(h) "Deadly weapon" means and includes any instrument or weapon ofthe kind commonly known as a blackjack, slungshot, billy, sandclub,sandbag, metal knuckles, dirk, dagger, pistol, or revolver, or anyother firearm, any knife having a blade longer than five inches, anyrazor with an unguarded blade, and any metal pipe or bar used orintended to be used as a club.
under the law there is a section for definitions - for which other sections of law rely. that is what i provided to show you what the basis of the ticket is -
if you can explain that the definition of a blackjack is not the same as that of a spring loaded baton - then you will be successful in your defense against the ticket.
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