The municipal code is published online. Here is a link to the relevant chapter, 13.68:
http://www.codepublishing.com/CA/Be...tml/Berkeley13/Berkeley1368/Berkeley1368.html
13.68.010 Dangerous weapon--Defined.
As used in this chapter, "dangerous weapon" means and includes, but is not limited to:
A.
Any knife having a blade three inches or more in length, or any snap-blade or spring-blade knife regardless of the length of the blade;
B. Any ice pick or similar sharp stabbing tool;
C. Any straight edge razor or any razor blade fitted to a handle;
D.
Any cutting, stabbing or bludgeoning weapon or device capable of inflicting grievous bodily harm;
E. Any dirk or dagger or bludgeon;
F. Any "taser public defender" or other similar electronic immobilizer which causes, by means of an electrical current, a person to experience muscle spasms and extreme pain, followed by unconsciousness. (Ord. 4814-NS § 1, 1975: Ord. 2881-NS § 1, 1947)
13.68.020 Dangerous weapon--Carrying prohibited--Exceptions.
It is unlawful for any person to carry upon his person or to have in his possession or under his control any dangerous weapon; provided, that
it shall be a defense to any prosecution for a violation of this section if, at the time of the alleged violation, the instrument or device alleged to be a dangerous weapon was in good faith carried upon the person of the accused or was in good faith in his possession or control for use in his lawful occupation or employment or for the purpose of lawful recreation; and provided further, that the provisions of this section shall not apply to the commission of any act which is made a public offense by any law of this state. (Ord. 2881-NS § 2, 1947)
13.68.030 Disorderly conduct prohibited when.
It is unlawful for any person who has upon his person or in his possession or control any dangerous weapon to engage in any fight or participate in any rough or disorderly conduct within the City. (Ord. 2881-NS § 3, 1947)
13.68.040 Violation--Penalty.
Any person violating any of the provisions of this chapter shall be deemed guilty of a misdemeanor and upon conviction thereof shall be punished as set forth in Chapter 1.20 of this code. (Ord. 5716-NS § 3 (part), 1986: Ord. 2881-NS § 4, 1947)
------------------
So looks like your Ti-Lite would be over the length limit.