The knife laws seem to be vague and really up to the officers or the judge. A folder of ANY size? All the LEO's I know said nothing over 3" and all the Cali forum people I know say nothing over 3.5"!
I have a BM mini barage that I took the assist out of (I love it!). The auto assisted knife is "legal" in Cali, but I know of two people that had theirs taken away from them because they were assisted.
I also think it depends on the County, I think Los Angeles (where I live...jealous?) and San Francisco are much different than say Bakersfield.
MM
Statewide law does not have size limits on either fixed or folders, but does state that fixed blades must be openly carried on the belt. County ordinances are quite different thought and LA has the worst. Here in Northern California you'd have to be very obvious to attract attention of the law.
