S.S. Death Star?

[PHArchivist]

1.5 inches, 16.5inches, 9.25 inches!!!!!!
I thought you people were civilised. Doesn't anybody use the metric system at all? lol

I actually use both! I was using millimeters when measuring the paper prints of both photos to ensure the size of the images in the pritn outs were the same...

 

[PHArchivist]

The margin of error is proportional to the compensation (or lack thereof) for lens/proximity distortion. Spherical objects are the most difficult to nail down by far. Even having "nearly orthographic" references of R2's dome, shot with a 200 mm lens yielded many inaccuracies when actually compared with measured-on-the-surface-of-the-dome data, for example.

_Mike

Mike I can't help but to agree, based on my own gut feelings and on respect for your experience in this arena.

Though this is all I have to go on...

Unless the owner retrieves the model from the museum and allows hobbyists such as myself direct hands-on access, I'm not real sure how to improve my estimates.

Would your wire frame model help with this? Any other suggestions?