Chan Eil Whiskers
Fumbling about.
The trick to getting what you need from a scope is to experiment with the light at different angles (if adjustable) to get the best possible image of the edge - not the bevel. Sometimes the light that it comes with does not help as much.
I use a small desk lamp placed next to the scope to give the best light for an image image.
Create some way of always placing the razor in the jig the same way then move the jig sideways to see the entire edge.
Try a black piece of paper on the grid paper you use now or any dark color, you will get better images.
With a razor opened 90 degrees the edge stays off the substrate a tiny bit and it is a constant (pretty much) for that razor just slide the unit along.
On my microscope table I adhered a larger piece of black acrylic that holds the entire razor and can slide it (the razor) along to view anywhere on the edge.
Its worth it.
Very nice tips, sir.