1.1本规范规定了用于测试土壤、岩石和相关建筑材料的通用天平、天平和标准质量的最低要求。 1.2本规范为评估、选择和指定测试土壤、岩石和相关建筑材料时使用的通用天平、天平和标准质量提供了指导。 1.3天平和天平的精度要求是根据所有误差源对整体天平性能的综合影响来规定的。有意避免测量特定误差源和考虑与天平结构有关的细节。 1.4本规范不包括精度高于正常土壤、岩石和相关建筑材料中通常要求的天平和天平的要求。 1.5本规范不适用于非放射性天平。 1.6本规范不涉及用于验证或量化处理天平和天平的特定参数的方法。有关用于评估天平性能的测试的描述，请参阅NIST手册44。 1.7本规范无意用作天平和天平的采购规范。 注1:国家标准与技术研究所（NIST）、前国家标准局（NBS）和国际法定计量组织（OIML）发布了标准或实践，规定了天平的施工要求和性能规范。ASTM、OIML和NIST发布了标准质量的施工标准和公差。 注2-本标准中使用了术语“质量”和“确定质量”，而不是更常用的术语“重量”和“重量”，以符合标准公制惯例。此外，当提及用于比较或测量其他质量的已知指定质量的材料时，使用术语“标准质量”代替“重量”。

1.1 This specification provides minimum requirements for general-purpose scales, balances, and standard masses used in testing soil, rock, and related construction materials. 1.2 This specification provides guidance for evaluating, selecting, and specifying general purpose scales, balances, and standard masses used in testing soil, rock, and related construction materials. 1.3 The accuracy requirements for balances and scales are specified in terms of the combined effect of all sources of error contributing to overall balance performance. The measurement of specific sources of error and consideration of details pertaining to balance construction have been intentionally avoided. 1.4 This specification does not include requirements for balances and scales that have accuracies greater than those generally required in normal soil, rock, and related construction materials. 1.5 This specification does not apply to nongraduated balances. 1.6 This specification does not address the methods used to verify or quantify specific parameters dealing with balances and scales. For a description of tests used in evaluating balance performance, see NIST Handbook 44. 1.7 This specification is not intended to be used as a specification for the purchase of balances and scales. Note 1-The National Institute of Standards and Technology (NIST), formerly the National Bureau of Standards (NBS), and the International Organization of Legal Metrology (OIML) publish standards or practices that specify construction requirements as well as performance specifications for balances. ASTM, OIML, and NIST publish construction standards and tolerances for standard masses. Note 2-The terms "mass" and "determine the mass of" are used in this standard instead of the more commonly used terms "weight" and "weigh" to comply with standard metric practice. In addition, the term "standard mass(es)" is used instead of "weight(s)" when referring to a piece of material of known specified mass used to compare or measure the mass of other masses.