Recommend alignment protractor

I'm good with the ole DB protractor. But my favorite was the van den Hul mirrored one with a very fine alignment grid (I can't remember if it's scribed or not.) They used to come only w/ the cartridges, then they weren't available at all. Now they're available as an accessory from van den Hul USA for $20.

http://gallery.bcentral.com/GID5134202DD482363-5-Accessories/1-Phono.aspx

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Yes there's a good reason for the non-FERROUS screwdriver. The magnets in a MC cart. are pretty strong, and could attract the shank of a ferrous (iron or steel) screwdriver toward the cartridge with enough force to (if you're not paying attention) hit and damage the cantilever (oops!) or worse, if it happens to be a naked cartridge.