Description: 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, the ASME standard should be consulted for further information.     Download: Tech Bulletin - Accuracy and Calibration of Calipers The Mitutoyo Institute of Metrology provides educational courses and on-demand resources across a wide variety of measurement related topics including basic inspection techniques, principles of dimensional metrology, calibration methods and GD&T. We can be contacted via email at, via phone at 888-648-8869 (option 6), or visit the Education and Training home page.