Section 10
SEC. 10. The fundamental standard weights, measures, and instruments for determining specific gravity for the Philippine Islands shall be deposited in the Bureau of Science and shall be kept under the care and direction of the Director of the Bureau of Science. The Collector of Internal Revenue shall call upon the Director of the Bureau of Science for such comparisons of secondary standards with the fundamental ones as he may deem necessary, and such comparisons having been made in the Bureau of Science the secondary standards shall then be stamped with or otherwise designated by ' an appropriate mark or seal to be selected by the Director of the Bureau of Science, and shall be accompanied by a certificate setting forth the variation of these secondary standards from the fundamental ones. If in the judgment of the Director of the Bureau of Science such variation in any instance is of sufficient magnitude to warrant the condemnation of any such secondary standard, it shall be condemned and destroyed in the presence of the Director of the Bureau of Science or his authorized deputy. A full set of secondary standards shall be kept, subject to the use of the public, m the provincial building by each provincial treasurer.