Uni-Protractor Set tonearm alignment

Dear Albert,
you may get some comfort in changing headshells if you are using those ones with a fixed cart like the Fidelity Research FR-7 series in the same arm. This is among other reasons why I have one FR-66s on each Micro. Also the EMT JSD 6 Jubilee which I regard as a best buy for its quality and its wonderful sound provides a fixed solution.

The Ortofon RMA 309 allows changing EMT & Ortofon carts "nearly on the fly" not changing anything even not the weight in most cases.

Bu to be honest the real fun we have when "working on our arms and carts". Otherwise we cannot use our alignment tools resp. the Uni-Pro.

I also wonder why it shouldn't be possible to move the Uni-Pros arm to the middle as you describe it.

maybe the simplest solution is to print an exact scale meter on the Uni-Pros arm and supply an extra transparent block using parallel lines and matching the layout of the Uni-Pro just at the spindle site . You may then put the extra block over the black round spindle positioning it exactly over the middle of the spindle and facing it towards the scale meter as I have tried with my Dennessen approach. You are then able to read the distance easily. No more Feickert, no more Dennessen necessary. Dertonearm may provide a modified Uni-Pro arm and the block as a substitution package.

Best & Fun Only - Thuchan

I was always thinking about how to combine my measurement suggestion with the Dennesson and also the alignment by the Uni-Pro. Therefore only using one tool!!! For me the quest is over! You may see the result on my page (last image)

Best & Precision Only - Thuchan

Dear Thuchan, dear Downunder, originally I designed the UNI-Protractor as a tonearm alignment instrument. Measuring P2S is a matter of tonearm set-up and should be done prior to any alignment (usually you have to drill a hole in an armboard and so the mounting distance is kind of "pre-determined" before starting any alignment).
That's why P2S-measuring wasn't include din it's design. I now realize, that including the stainless steel metric ruler kind of woke up the wolves....
In any case - I will come up with an add-on to enable precise P2S measurement with the UNI-Protractor soon. This will NOT need any alternation to be done to UNI-Protractor and will come with a precise manual and installation instruction.
It will be a 5-minute plug'n'play device.
However - please accept my initial concept, that in my - sometimes strange and weird - mind, P2S was not an integral feature nor request in an alignment instrument for tonearms.
I still think that P2S is a part of tonearm set-up.
But - I will address it due to "public demand" ...;^) ....
Cheers,
D.

Dear Dertonarm,
do you have a launching schedule in mind?

Best & Fun Only - Thuchan