I have that scope.
The only problem is that when you lie your blade down ,open at a 90 degree angle , the toe is closer to the table surface than the heel. Which means that as you move the blade along under the scope it gets closer or further from the scope meaning you have to constantly adjust the focus.
What I do is just look at one part of the blade, the toe area and use my naked eye for the rest.
I guess I need to manufacture some thing to hold the toe up equal to the heel and it has to be able to slide along effortlessly .
Maybe balsa wood, dremeled out to house the whole blade? I'm on a mission now.
You can also get a closer look at the edge than in the video but that wont show if your missing the edge, it shows the surface structure of the metal .
Look :
Attachment 210174
A brand new T.I with a huge chip , I returned it :
Attachment 210175