Even if the sources of error in a measurement are controlled and corrected for, there will still be uncertainty associated with it. It is important to quantify this uncertainty so that we can estimate a range in which true value of the measurement will lie with a certain level of confidence e.g. 95%. Estimation of […]
The key objective of calibrating a vernier caliper is to verify that its measurement error is within specified permissible tolerance limits and its accuracy is intact. These tolerance or error limits for vernier calipers are mentioned in its specification or data sheet provided by the manufacturer. Accuracy specifications of the vernier are generally based on
Vernier Caliper Tolerance Limits: DIN 862, ASME, and ISO 17025 Guide Read More »
For calibration laboratories, ISO/IEC 17025 accreditation is a demonstration of their technical competence and capability to produce valid calibration results. What is ISO/IEC 17025:2017 Standard? The ISO/IEC 17025 standard lists the requirements for calibration laboratories to prove their competence and ability to produce valid results. Introduced for the first time in 1999, the 17025 standard
Guide to ISO/IEC 17025:2017 Accreditation For Calibration Laboratories Read More »
The term “impartiality” in the ISO/IEC 17025:2017 standard expresses objectivity meaning that the outcome of calibration and testing activities shall not be influenced by individual actions and circumstances. Key Requirements related to Impartiality in ISO 17025 standard The objective of including impartiality in the standard is not merely to safeguard the validity of results but
How to Ensure Impartiality in ISO 17025 Accredited Labs Read More »
Vernier Caliper is a widely used precision tool for dimensional measurements in production shops, inspection facilities, R&D labs, design labs, and other applications. It can measure internal, external, and depth dimensions. Like any other instrument, its utility lies in its ability to provide accurate and precise measurements. Periodic calibration is essential to maintain confidence in
Calibration of Vernier Caliper: A Step By Step Procedure Read More »
