Check out the work by
Conrad Hoffman. He's created a
program that, when fed your Pivot-to-Spindle distance (and innermost / outermost grove radii), will spit out a custom arc protractor for Baerwald, Löfgren and Stevenson alignments. This program writes directly to your printer drivers, and even though this is an early version, it works *really* well.
I have no affiliation with this product other than I happen to see his original post about it on AA and I've corresponded with him about some features I wanted. Mr. Hoffman is a really nice guy, and I'm excited to see this product available.
Also, it will print out 50Hz and 60Hz strobe templates.
Conrad's home page is
http://www.conradhoffman.com and he can be reached at choffman@rpa.net.
- Nicholas