All rules, regulations, and orders made by the board shall be in writing and shall be entered in full by the secretary of the board in a book to be kept for such purpose by the board, which shall be a public record and open to inspection at all times during reasonable office hours. A copy of any rule, regulation, or order, certified by a member of the board, or the secretary thereof, shall be received in evidence in all courts of this state with the same effect as the original.