What devices have you found useful when inspecting your stylii for cleanliness?

I have a Panasonic FF-394E X30 lighted scope I purchased years ago on a whim.  Like a little pocket, lighted microscope.  Kind of a cool little gadget for cartridge needle inspection.  There are usually a couple on Ebay.  

RB wrote, "my current tone arm is a fixed head-shell design so I cannot easily get a good viewing angle - the arm does not tilt much."  Do you really think one can inspect the rear of the stylus and the cantilever (which also can accumulate dirt and debris) without removing the cartridge from the headshell, in that situation?  All the magnification in the world is not going to allow a good view of the back end of the stylus and cantilever.  With my Triplanar, I can flip the headshell over on its back for inspection of the stylus/cantilever, without removing the cartridge from the tonearm or altering the azimuth (once the cartridge is reverted to playing position), but this does not seem to be possible with RB's tonearm.

Vivitar lighted magnifier from Amazon. Cheap and easy to use. Had mine for many years. 

On of those inexpensive LED microscopes from AMZ.

Mirrors and magnification.in dentistry they have small mouth mirrors and glasses with magnification loops.a surplus store might have some.i have used these alot in surgery.fiber optic scope like they use in auto industry might work they have lcd screens with magnification.i have some pediatric scopes I use to get stuff out of small kids lungs but they are way too expensive.we have huge monitors hi Def great detail. My rigid zero degree sinus scopes would work you might be able find some used on ebay.depends on how bad you want to see it.people send thier stylus in to be rebuilt you could call one of these companies and ask how they do it.enjoy the music