Leap Motion - XYZ data off centre

The Leap Motion plugin is giving off centre XYZ data, or it is just my Leap?

X range = -0.2 to 0.36
Y rage = 0 to 0.6
Z range = -0.34 to 0.2

0.2 would be 20cm off. you sure?
how are you measuring?
have you tried recalibration?

Did not know calibration was possible, will look at Intel’s software more closely.