Cartridge alignment tool

I have a Fiekert, recently used it to finish up after I had used My Geo-Disc as a rough start on a Soundsmith cart .The difference was so little it was impossible move my finger such a minute difference .
.

GeoDisc and related products does not have a Pivot to Spindle Ruler, so i have NO IDEA how do you guys are using such products if you're gonna swap a tonearm ??? Maybe it's good for ONE fixed tonearm on a turntable, but devices like GeoDisc are useless if you have many tonearms. Precision pivot to spindle setting is the first step for any toneam setup. This is the reason why Dr.Feickert is always better. 

The Geo-Disc certainly adjusts for any arm at any P2S distance; it’s a true universal. It does this by requiring a 1st step of aligning the disc via line-of-sight’ing its raised ridge to point directly at the tonearm’s pivot. By that step, the 1-point alignment grid swings into the correct position. Obviously some tonearms have better "center pivot" visual markings than others. And if you do something wacky, like having a way too large P2S distance on a short arm, you’ll run out of head-shell space to adjust the cartridge appropriately. I.e. the exact P2S distance doesn’t matter as long as you adjust and align for it specifically. But generally, Geo-Disc is the quickest reasonably accurate universal I’ve tried. I believe it’s a Loefgren A IEC alignment, which is fine IMO.

It works great for my FR64fx and especially Clearaudio Universal (very clear visual center). Yes, it gels with the same setting on my SMARTractor (its P2S "arm" has some play in it too, btw). I wouldn’t use it on my Phantom, but then I wouldn’t use anything other than the supplied Graham jig (or maybe a MintLP) on that arm, because the actual internal pivot point doesn’t have a good reference against the housing. The jig is really pretty nice; it could just use some minor alignment-visibility enhancements.

I could’ve been happy with just the Geo-Disc (and Graham jig for that arm).

There is a good review in the November 2018 Stereophile by Art Dudley of the Acoustical Systems SmarTractor of 3.5 pages. I concur with "The Smartractor is a breeze to use, and seems exceptionally well made."

@mulveling Sorry, but i don't understand why do we need that GeoDisc for $49 if almost the same protractor comes for free with Analog Test LP for the same price?  

This is Analog Test LP and free protractor inside. There are 3 different method on that protractor, one of them is Linier Offset Technique with just one point for the stylus and a line accross the protractor to point it to the pivot of the arm (same as with GeoDisc). But for the same price ($49) we will get Test LP (to measure tonearm/cartridge resonance) and 2 additional alignment methods on that protractor. 

This is GeoDisc with just one alignment method for $49  

And this is Dr.Feickert which is a much better, made of metal (not plastic) with many more features such as Stevenson, Baerwald, Lofgren methods, and more important - Precision Pivot to Spindle Ruler on it. All these for $185 (without VAT if you're not in UK or EU).