Don't apologize for causing trouble -- you didn't!
Originally Posted by wskmosaic
In addition to learning about densitometer calibration, I hope you also pick up some insight about searching. Google can be your friend. At the end of whatever words or phrases you need information on, simply add "site:url" to perform an advanced search. For example, to see what was previously discussed on the LFPF forum concerning the topic of this thread, you'd enter:
calibrate transmission densitometer site:largeformatphotography.info