How to calibrate German made Quick Test I/D Snap gauge

[ltlvt]

There has to be a calibration adjustment. I've never encountered a quality management system that does not require it for all measuring instruments. That just cannot be a disposable tool!

You are absolutely correct. It just goes to show the NORMAL WAY is not THE ONLY WAY. I am including pictures to see what I found and now it is no longer German Wal Art. LOL

 

[ltlvt]

Found the German way. It is dead nuts now' Thanks for everyone's input.