Photo to 2D sketch using distance markers

[pburgh.mcs (Eric)]

Maybe using a perfect 8" circle would help resolve orientation as well. Assuming this can be resolved using rhino. I know 2D drawing can be scaled, but a photo on a single plane… I’m thinking this should be possible.

Maybe this:

What prog to marry a CAD model to a photo?

Hi, does anyone know of any affordable prog that will marry up a CAD model to a perspective picture ? I have trialled FormZ and sketchup so far, FormZ comes close, but I cant tell if the mismatches are my model at fault or the prog. The model is accurate and the photo is 70 yrs old but well taken. It surfaces parts that didnt have surfaces, and gives strange effects, struggling a bit still. Export is dwg and thats got issues. Green blobs as opposed to crosshairs for snapping. Sketchup lacks …