This technical bulletin was developed to help owners of measuring equipment reduce risk and optimize their expenses in calibration. All measuring equipment requires calibration; however, there are many different types of calibrations which can lead to false assumptions and missed...

This technical bulletin addresses how measurement accuracy and uncertainty can be accounted for when making statements of conformity to specified requirements (In/Out tolerances or Pass/Fail decisions.) In particular, this technical bulletin explores one simple rule called the simple acceptance and...

Requirements for calibration appear in most national and international quality standards, and most organizations recognize that measuring equipment must be calibrated. However, there is much confusion regarding the definition of calibration, and this confusion increases quality-related risks to organizations. The...

This technical bulletin addresses the accuracy and calibration of granite surface plates. The technical basis for this document is the American national standard (ANSI standard) entitled B89.3.7-2013, Granite Surface Plates. This technical bulletin summarizes key technical issues; however, the ASME...

This technical bulletin addresses the accuracy and calibration of digital, dial, and vernier calipers. The technical basis for this document is the American national standard (ANSI standard) entitled ASME B89.1.14-2018. This technical bulletin summarizes the most important technical issues; however,...

This technical bulletin addresses the accuracy and calibration of profile projectors, also known as optical comparators. No international or American national standard currently exists that addresses the specification of profile projectors. The technical basis for this document is the Japanese...

This technical bulletin addresses an important aspect of the language of measurement – the units applied when reporting or discussing measured values