Print the free one on line and try it, just go to:
http://www.vinylengine.com/manuals_tonearm_protractors.shtml
I downloaded and printed the generic Stupid Protractor, but the scale is off by about 10%.
Is there a secret handshake required to learn the inner workings of the Vinyl Club? I'll trade the secret to how Chris Angel levitates.
:)