What alignment method? Audio Technica ATPL120

Download this tool:

Custom arc template generator for phono cartridge alignment (also prints strobe disks) V 1.08

http://www.conradhoffman.com/chsw.htm

I *believe* the Pivot-to-Spindle (P-to-S) distance for the AP PL-120 is 230 mm (but you should pull out a handy-dandy ruler to verify).

Enter that P-to-S distance into the tool linked above, select IEC to set your inner / outer groove radii, and "Lofgren A" (which some call "Baerwald").

Print out the template on a good sheet of photo paper, and re-verify the dimensions of the protractor with your handy-dandy ruler.

Use the help button and the readme.txt if you have any questions.

I couldn't get it to work :(

A better question is: Can I align the ATPL120 using Baerwald? Does anyone know, is this OK (as in it won't damage my vinyl)?

If it were my turntable, and especially if I established that the effective length of
the PL-120 is the same as the SL12x0, then I would definitely just use the
Technics protractor available on VinylEngine.

What kind of cartridge are you using? I don't think there's much chance of
damaging your records from incorrect overhang unless *maybe* you're using
one of those extra long, thin stylii, such as a Fritz-Geiger. If it's a basic elliptical
or MicroLine, you're probably safe, and if it's conical, you're almost certainly
safe.

Ortofon 2M Blue

By length, do you mean mounting distance? What exactly is mounting distance; how do I measure it?

Technics or Baerwald (or both) is the ultimate question...

For best alignment, Google Mint Tractor and they will custom build you a mirrored, very acurate alignment tool specific to your arm and table. I find this device far betters all the others.