Re-cal required for units just sitting?

[swampgator]

I saw a brief article on the NCSLI Home page that talked about whether there is a need to recalibrate instruments that basically just sit on shelf and are never used...sort of as a replacement. Unfortunately, I was not able to read it at the time and I can no longer find it. I know there has been discussion over the years about that. Can anyone point to an article or some sort of guidance regarding this?

[swampgator]

Never mind all...had a cranial rectum inversion for a moment. It's LM-19 if anyone was wondering.