Old thread, I need a tool to align different cartridges on different tonearms. From my searches apparently the Feickert protractor is very good specifically with P2S distances, not so good with cart alignment, the Smartractor although more expensive allows you to adjust long tonearms and the cartridge with better precision, but it lacks Stevenson's alignment which most japanese tonearms (the ones I will be using) "required", I said required because I understand you could perfectly use Lofgren to align these tonearms with average best outer and inner alignment.I would love to hear your opinions on protractors so I can make a good decision. I know Lew uses Uni (same as Smartractor), chakster uses Feickert, I think Raul is all about Lofgren even for the japanese tonearms, apologies if I'm mistakenThank you