vMeasure can determine approximate distance between two points in space from 1 cm up to approximately 200 cm or from 1 inch up to approximately 80 inch. Distance calculation is based on the device acceleration, which means that the device has to be moved from one point to another in order to measure the distance. Measurement is possible only in a straight line and along the X-axis of the device.
The precision depends on the position; if the device is moved on the straight surface (for example table) then is the precision higher. On the other hand if the measurement is done without any supporting surface, then is the precision lower.