When the roll is finally completed by the board of supervisors, as provided by law and in accordance with the instructions of the state tax commission, the clerk shall make two (2) fair and correct copies, or reproductions of such copies, of each roll, but in counties having two (2) judicial districts, two (2) for each district, as examined and corrected, if it be corrected. He shall transmit one (1) copy of each roll to the state tax commission within thirty (30) days after the final approval of the rolls by the board under the orders of the state tax commission and he shall be liable on his bond for failure to transmit same by that date. He shall deliver the other copy of each roll to the tax collector upon receipt of approval of the roll by the state tax commission. He shall retain and carefully preserve the original rolls as a public record in his office. The clerk shall make the proper extensions of the total amount of property assessed to every taxpayer, and shall add truly and correctly every page of said copies and carry the results thereof to the recapitulation. He shall add said recapitulation and shall certify to the truth and correctness of all calculations in said copies.