Real measurements

Hello, I bought a CR-Scan Ferret Pro 3D Scanner and I want to scan a large part of a mold, but when I do, the image or result doesn’t reflect the actual measurements. I would like to know how I can achieve accurate measurements or how I can scale it correctly.

The same problem, the part scan does not match the actual dimensions.

There is no calibration plate included, and it cannot be purchased separately

CR-Scan Ferret Pro