Scale information from the result of ground plane

Hi,

I would like to show right scale of 3d model on the anchor.

But how can I retrieve plane scale to estimate the scale for 3d model like ARkit anchor plane ?

The sample is to set 10 to scale 3d model.

SampleApplicationUtils::scalePoseMatrix(10.0f, 10.0f, 10.0f, droneMV);

Felix