Auditing ISO 9001/AS 9100, sec. 7.1.5 (Calibration)
Calipers: Advantages and Disadvantages of the 3 types
ISO 17025:2017 Objective Evidence Requirements: Part 1 Documentation
NIST Traceability Numbers - The Sasquatch of Metrology
Reducing Waste: Through Optimizing Calibration Intervals
Using State Metrology Labs (for inexpensive calibration of weights – aka mass)