NBS Metric Kit: Official Metric Information

Kit issued by the U.S. National Bureau of Standards containing materials regarding conversion to the metric system of measurement. The kit includes a letter of introduction; an order form; two plastic cards printed with rulers and conversion information; and four booklets that discuss how the metric system is different from the English system of measurement, why America should switch, and reference materials for converting.
Date: 1977?
Creator: United States. National Bureau of Standards.
System: The UNT Digital Library