What is clause 9 about?

Answer:
Clause 9 is not about monitoring and measuring of gages and calibration. Clause 9 is more about process and management system performance. Quality control is included in clauses 8.4 and 8.6. Calibration in included in clause 7.1.5.

The following material will provide you information about monitoring and measurement:

- ISO 9001 – Monitoring and Measurement: The basis for evidence-based decisions - https://advisera.com/9001academy/blog/2020/09/21/how-to-perform-monitoring-and-measurement-according-to-iso-9001/
- Analysis of measuring and monitoring requirements in ISO 9001:2015 - https://advisera.com/9001academy/knowledgebase/analysis-of-measuring-and-monitoring-requirements-in-iso-90012015/
- Practical tips for measuring your QMS according to ISO 9001:2015 clause 9.1 - https://advisera.com/9001academy/blog/2017/08/29/practical-tips-for-measuring-your-qms-according-to-iso-90012015-clause-9-1/
- free online training ISO 9001:2015 Foundations Course – https://advisera.com/training/iso-9001-foundations-course/
- book - Discover ISO 9001:2015 Through Practical Examples - https://advisera.com/books/discover-iso-9001-2015-through-practical-examples/