ASME B1.25-2019
Measurement Uncertainty Factors in the Calibration of Screw Thread Gages

Standard No.

ASME B1.25-2019

Release Date

2019

Published By

American Society of Mechanical Engineers (ASME)

Latest

ASME B1.25-2019

Scope

(a) This Standard notes technical factors that can explain measurement differences between two parties calibrating the same gage. It is directed to the etrology involved, not acceptance rules or other quality considerations. (b) While measurement uncertainty applies to the calibration of gages to any standard, this Standard focuses on gages made to ASME standards only. The alibration of gages necessitates a thorough understanding of the standards they were made to because the standards often include required conditions for and corrections to the calibration. (c) Users of this Standard should be aware that while a number of elements for each gage type are listed, independent calibration laboratories may not include them all in their reports. Agreement should be reached with outside calibration providers as to what elements are included in their various levels of calibration. （a）本标准指出了可以解释校准同一量具的双方之间的测量差异的技术因素。它针对所涉及的生态学，而不是验收规则或其他质量考虑。 （b） 虽然测量不确定度适用于根据任何标准校准量具，但本标准仅关注根据ASME标准制造的量具。量具的校准需要彻底了解其标准，因为这些标准通常包括校准所需的条件和校正。 （c） 本标准的用户应注意，虽然列出了每种量具类型的许多元件，但独立的校准实验室可能不会将它们全部纳入其报告中。应与外部校准提供商就其各种级别的校准中包含哪些元素达成协议。

ASME B1.25-2019 Referenced Document

• ASME B1.2 Gages and gaging for unified inch screw threads
• ASME B1.7 Screw Threads: Nomenclature, Definitions, and Letter Symbols Revision of ANSI B1.7M-1984
• ASME B89.1.5 Measurement of Plain External Diameters for use as Master Discs or Cylindrical Plug Gages
• ASME B89.1.6 Measurement of Plain Internal Diameters for Use as a Master Rings or Ring Guages
• ISO/IEC Guide 99:2007 International vocabulary of metrology - Basic and general concepts and associated terms (VIM)

ASME B1.25-2019 history

• 2019 ASME B1.25-2019 Measurement Uncertainty Factors in the Calibration of Screw Thread Gages

ASME B1.25-2019 -All Parts