Great $8 tool for knife guys...

[glocker199]

I recently picked up a lighted magnifier that clips on to any smart phone. It basically turns your phone's camera into an electronic microscope. Very handy for examining edges, scratches, corrosion, etc. I paid $7.99 plus tax from a major retail chain but I've seen them in other stores as well.

Here are a couple stills I took with the device. It's much clearer with the live view than it looks in the pictures.

 

[Sadden]

It definately changes your perspective when looking at edges thats for sure. I like my little veho usb microscope