Vision system to look at a bubble level?

Question

Would it be possible to use some type of NI vision system to view a bubble in a bubble type level and to somehow "measure" how far off the bubble is left or right?
This would be some type of system that would (somehow) set a table to a calibrated "known" level position. I'm not sure if this would be some type of gyroscope or another calbirated level, but we would have to start with a good solid calibrated level surface. We would then put a level to be tested and use a vision system to "view" the bubble to see how far off it is and report it as a % accuracy or uncertainty.
I'm not looking for Labview code, only if this can be done with some NI vision system. Is there a camera that can see the bubble and calculate some % of the bubble outside of the lines?
Seems like an odd application I know, but I'm just looking for input.

Answer 1

Alternative approach I'd use if space permits and tilt angle is within reason:
Use a digital protractor and then use vision tools for character recognition to read the display. If angle range is high, then use a fiducial and coordinate system to compensate for the angle so the characters can still be read.
http://www.globalindustrial.com/p/tools/test-measurement/Measuring-Protractors/pro-360-digital-protr...
EDIT: There are also inclinometers that have analog and digital ouputs/communications that would alleviate the need for vision entirely.
-AK2DM
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