The board may from time to time make such regulations not inconsistent with this chapter and the purpose and intention thereof as it shall deem necessary for carrying out the provisions of this chapter, and from time to time alter, repeal or amend such regulations, or any of them.
Prima facie evidence of any such regulation may be given in all courts and proceedings by the production of what purports to be an official printed copy of such regulation, alteration, repeal or amendment.