[2339-125.] SECTION  31 . Requirement as to Use of Metric System.  — The metric system of weights and measures, with its recognized scales, shall be used in all contracts, deeds, and other instruments publicly and officially attested, and in all official documents; and,  except as hereinbelow provided, only weights and measures of the metric system shall be officially sealed and licensed. In the purchase and sale of manufactured lumber the English system of measures may be employed; and in ordering commodities or articles from abroad such weights and measures may be employed as are commonly used in the country to which the order is sent or f rom which the goods are shipped. [2339-126.]  Trade-Marks SECTION  32 . Division of Archives, Patents, etc.  — In the division of archives, patents, copyrights, and trade-marks shall be kept such public records, papers, and documents as may, in accordance with law or by order of the Governor-General, be deposited th erein. The chief of said division shall be an  ex officio  notary public. [644-1; 1407-3 (b).] SECTION  33 . Seal of Division.  — The division of archives, patents, copyrights, and trade-marks shall have a seal of such design as shall be prescribed by law or order of the Governor-General. Said seal shall be used on all certified copies of documents and papers issued by the division and on all other papers upon which a seal from said office may be required, whether in notarial capacity or otherwise. ARTICLE  X Division of Archives, Patents, Copyrights, and [644-1.] SECTION  34 . Information for Official Purposes. — Delivery of Original Documents.  — The chief of said division shall furnish or cause to be furnished without charge, for official use, such information from the Insular archives and such papers and certified  copies of papers contained therein as may 10 Copyright 2012 CD Technologies Asia, Inc. and Accesslaw, Inc. Philippine Law Encyclopedia 2011