hundred kilograms  one peso and twenty centavos. For an apothecary balance or other balance of precision the charge shall be doubled. With each scale or balance a complete set of weights for use therewith shall be sealed free of charge. For each extra weight the charge shall be five centavos. [2339-99.] S ECTION  1681 . Form and Duration of License for Use of Weights and Measures . — The receipt for the fee charged for the sealing of weights and measures shall serve as a license to use such instrument for one year from the date of sealing  unless deterioratio n or damage occurs in that period which renders the weight or measure inaccurate. Such receipt shall be preserved by the owner and shall be exhibited on demand of any internal-revenue officer. [2339-133.] S ECTION  1682 . Secondary Standards Preserved by Provincial Treasurers — Testing of Same . — For use in the testing of weights and measures in the provinces  provincial treasurers shall keep full sets of secondary standards in the provincial buildings. The Co llector of Internal Revenue shall be responsible for the inspection and proper testing of all provincial and municipal standards of weight and measure. IHSTDE [2339-127.] S ECTION  1683 . Comparison of Secondary and Fundamental Standards . — The comparison of the secondary and fundamental standards shall be made in the Bureau of Science at the instance of the Collector of Internal Revenue. When found to be sufficiently accurate  the secondary standard shall be distinguished by a label  tag  or seal and shall be accompanied by a certificate showing the amount of its variation from the fundamental standard. If the variation is of sufficient magnitude to impair the utility of the in strument  it shall be destroyed in the Bureau of Science. Copyright 2012 CD Technologies Asia  Inc. and Accesslaw  Inc. Philippine Law Encyclopedia 2011 507 ( c ) Those having a capacity of not over three hundred but more than thirty kilograms  sixty centavos. ( d ) Those with a capacity not greater than thirty kilograms  thirty centavos.