California Code, Business and Professions Code - BPC § 9888.2

The director shall adopt regulations which prescribe the equipment and other qualifications of any station as a condition to licensing the station as an official station for adjusting lamps or brakes and shall prescribe the qualifications of adjusters employed therein.

After consulting with the Department of the California Highway Patrol, the director may, by regulation, approve testing and calibrating equipment, which is capable of measuring or calibrating the standards imposed by statute and by rules and regulations, for use in official stations, and may approve the testing laboratories and the equipment they use to certify the performance of testing and calibrating equipment.