As more countries become involved in joint manufacturing programs, the need for standardization increases. One facet of this is the development of the International System of Units, which is gaining widespread international acceptance.In the aerospace industry the need for standardization is well-recognized. In Europe, the Association of Aeronautical and Space Equipment Manufacturers has been established. This institution, which is restricted to European nations, publishes standards with SI as the basic module. On a worldwide basis, the most important standardizing body is the International Organization for Standardization, established by a United Nations committee in 1944. Its 60 member nations work together in committees to prepare draft standards for membership approval.And in the United States, all activity is directed through the American National Standards Institute, the official representative in the ISO. ANSI in turn delegates to various organizations the responsibility for developing positions representing this country.