in reply to Re^2: The best object to provide scale on a photo showing a small object is:
in thread The best object to provide scale on a photo showing a small object is:
the coin, being the most versatile, is should be the obvious winner.
Which coin would you use?
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.