I thought I'd share a 'known' edge (to me). The following practice imagery, through the toolmaker's microscope, are of a factory new, double bevel, 0.009", single edge, razor blade.
They were taken through an eye piece lens of 10x, and objective lenses of 5, 10, 20, and 40x, so I believe the powers are 50-400x (correct me if wrong here) but the images are cropped and reduced, so the powers are relative...FWIW it was an interesting exercise:
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Here's the video:
http://www.youtube.com/watch?v=GLsoaAyTr7I
Stay tuned for honed razor details...