JJF 1707-2018 in English

This document provides a calibration specification for a particular type of thickness measurement instrument. It outlines the technical requirements, calibration methods, and procedures necessary to ensure the accuracy and reliability of measurements performed by this equipment. The content includes definitions of key terms, calibration conditions, reference standards, and the procedures for conducting calibration. Additionally, it specifies the requirements for the calibration certificate and the information that should be included in it. The document is intended to be used by calibration laboratories, manufacturers, and users of the instrument to ensure that the device meets the required performance standards. It covers various aspects of the calibration process, including preparation, execution, and verification of results, ensuring that the instrument operates within acceptable tolerances.