Oh, I use public libraries often enough. I just didn't find the upkeep on the MATLAB one to be worth the money (whereas the basic MATLAB maintenance fee gets paid on time!). We generally do ... odd stuff so there aren't libraries generally for what I need. That's ok. That gives me something to do all day when I'm not reading this site!

As far as realignment goes we tend to deliver instruments that can bolt onto a truck, airplane, or helicopter. A little earthquake wouldn't bother them. Things like holography would drive me nuts. I hate precision alignment. We tend to use FedEx and UPS as our vibration testers. If the instrument can ship from CA to me and back again still working it's ready for just about anything!