ofxKinect: is getWorldCoordinateAt unitless or in mm

I would really appreciate if someone could answer this as it will help me understand a problem i have. I’m trying to measure two points (lets say a ruler) in real world coordinates (mm or meters). I know the Z axis of the point returned by getWorldCoordinateAt is in mm (since it is obtained from the depth sensor) and i’m assuming x and y should be too?. I knew this at some point (but i have some issues with memory).

Thanks :smile:

not sure if this is what you were looking for:

http://openframeworks.cc/documentation/math/ofVec3f/#!show_distance