To give a bit of background, I am working on a DIY wheel alignment just to save some money and possibly learn a thing or two. The camber/caster involves measuring an angle that is parallel to the force of gravity (pitch or roll or X or Y axis). The toe involves measuring an angle that is orthogonal to the force of gravity (yaw or Z axis).
I have a dual-axis inclinometer (this one) that measures pitch and roll. I was able to get very accurate readings for the camber. However, my thought was that rotating the inclinometer 90 degrees would allow the X/Y axes to become a Z axes. However, when I rotate it the screen itself changes to only provide measurements in the pitch/roll axes. After much more thought and looking around, I am starting to think that this inclinometer is not capable of measuring yaw because it depends on gravity to measure tilt.
- How do these inclinometers typically work?
- Are they independent of the force of gravity?
- Are there particular models or methods that can be independent of gravity?