Discuss The Viv Lab Rigid Arm

Where did you get the Viv protractor? I wonder whether they’re all the same or different for different lengths.

They have to be all the same, with longer arms just sitting further away. I downloaded the manual from the US importer and printed out the protractor>

https://www.sierrasound.net/s/RigidFloat-tonearm-manual.pdf

You’re probably correct. 

With high quality, properly set up arms and cartridges very little of this applies. What is with that silly brush hanging of the front of that cartridge? I always removed those as they increase skating.  I stared at the cantilever of my Atlas and the only movement at the time was due to the eccentricity of the record which is a far more common source of pitch variation along with warps. @lewm Remember that Nakamichi turntable that corrected eccentricity?  If there is any "scrubbing" in my setup, which is nothing special, I can not see it. All this theoretical masterbation gives me a headache. If you choose your cartridges wisely, considering the tonearm or arms that you have and set them up carefully, none of this applies. The record itself is a far more common source of error. 

It’s “masturbation”.

I don’t like the brush, either, but that has nothing to do with “scrubbing”. If the whole thing is a red herring, why didn’t anyone on DIYAudio challenge it? I agree, it’s not easy to visualize. The visible wiggle only occurred in the YouTube videos when they introduced resonant frequency test tones superimposed on the audible test tone. I found the videos most convincing.