6704.  (a) In order to safeguard life, health, property, and public
welfare, no person shall practice civil, electrical, or mechanical
engineering unless appropriately licensed or specifically exempted
from licensure under this chapter, and only persons licensed under
this chapter shall be entitled to take and use the titles "consulting
engineer," "professional engineer," or "registered engineer," or any
combination of those titles or abbreviations thereof, and according
to licensure with the board the engineering branch titles specified
in Section 6732, or the authority titles specified in Sections 6736
and 6736.1, or the title "engineer-in-training."
   (b) The provisions of this section shall not prevent the use of
the title "consulting engineer" by a person who has qualified for and
maintained exemption for using that title under the provisions of
Section 6732.1, or by a person licensed as a photogrammetric
surveyor.