Scale bars really are one of the easiest to use tools that I am yet to see discussed regularly.

This video is stacked with technical talk, so be warned.
Part two, where we will go into building scale bars, calibration and adapting your workflows around them, will be coming soon.

Note I do not go into circular targets or metashape. this is because I do not have a license for metashape.

More Resources:
https://april.eecs.umich.edu/software...
https://en.wikipedia.org/wiki/Hamming...

https://scanspace.nz/
https://www.artstation.com/shrogg
  / shrogg