Do you mean the size of each pixel in relation to reality?
This is the FARO scanner that was used FARO Focus x 130
How can I look for the GSD?
“The ultra-portable Focus3D X 130 enables fast, straightforward, and accurate measurements of objects and buildings. It records architectural façades, complex structures, production and supply facilities, accident sites, and large-volume components.”
Distance accuracy up to ±2mm
Range from 0.6m up to 130m
Noise reduction 50%