Summary

Remix from navydiver Thorens_Alignment_Gauge_V2.stl model. Huge thanks to him. Applied the comments on the "THE THORENS BAERWALD ARC PROTRACTOR" from www.vinylengine.com (available here: http://cyrille.pinton.free.fr/electroac/experiences/refection_thorens_td-165/engine_thorens_arc_baerwald.pdf):

"2- the baerwald tonearm effective lenght asociated with a mouting distance of 215.6 mm is 233.37 mm.
This is 3.37mm more than the effective length given by Thorens for the arms listed here. Accordingly, you'll
have to move the cartridge front to the headshell."

Therefore, the v-notch has been moved by cos(22°)*3.37 mm = 3.12 mm in order to match the "new" effective length of 233.37 mm.

Note, I have kept the original "Thorens" Marking but I recommend printing from that face up. No support is needed.