I'm mostly bumping this thread with a "me too". I would appreciate a resource—someone I could hire to find the "right" code who does something more than just searching the codes for keywords (which I can do just as well.)
For products that haven't existed before, it's a challenge. My company sells a measuring tool that is designed with power-generation turbine alignment in mind. Ultimately it is a measuring device, electronic, other which seems to be the best fit. You're probably on the right track, but I'd download the chapters of codes to find the best guess since sometimes it's buried in something you don't expect—like maybe computer equipment or automotive.