This document is the primary American National Standard on application of the metric system. It emphasizes use of the International System of Units (SI), which is the modern, internationally accepted metric system. It includes information on SI, a limited list of units recognized for use with SI, and a list of conversion factors, together with general guidance on style and usage. It also lists older "metric" units that shall no longer be used. The word primary implies that other metric… read more standards in the United States should be consistent with this document. read less

定价： 元 加购物车

This document sets forth standard metric practice for the United States. Modern metric practice is based on the International System of Units, a system developed and maintained by the General Conference on Weights and Measures (abbreviated as CGPM from the official French name, Conference GnCrale des Poids et Mesures) and intended as a basis for worldwide standardization of measurement units. The name International System of Units and the international abbreviation SI (from the French name, Le… read more Syst6me International dunites) were adopted by the 11 th CGPM in 1960. SI is a complete, coherent system that is being universally adopted. Information is included on SI, a limited list of non-SI units recognized for use with SI units, and a list of conversion factors from non-SI to SI units, together with general guidance on proper style and usage. An understanding of SI and careful use according to this standard will help to avoid the degradation that has occurred in some previous measurement systems. read less

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This PDF includes Amd #1-#3. 1. Scope 1.1 This Standard gives tables of standard tolerances for linear dimensions in both inch and metric units, covering a range of sizes up to 200 inches or 5,000 millimetres. Tolerances are provided in a series of

定价： 319元 / 折扣价： 272 元

This generic standard may be applied in all fields of electronics where equipment and installations are required to conform to a metric modular order. The choice of coordination dimensions for the mechanical structure for heights, widths, and depths lies within a homogeneous, metric, modular, three-dimensional grid as specified in IEC 917 (1988) [13]. Optimum conditions are thereby created for the application of computer-assisted methods throughout design and manufacturing, such as, for… read more instance, computer-assisted planning, development, manufacturing, testing, and installation. read less

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定价： 605元 / 折扣价： 515 元

1. Scope 1.1 This Standard provides definitions of terms, tables of preferred basic sizes and standard tolerances, a series of standard fits to cover most engineering requirements, and information for the design of special fits for use where standard

定价： 319元 / 折扣价： 272 元

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