2. analog
  3. 1391922013

Tool for measuring pivot to spindle distance?

My new cartridge is on its way. I am making sure I have all the necessary tools for setting up the tonearm and cartridge, and realized that I don't have a decent tool for measuring the pivot to spindle distance for the tonearm. All I have is a plastic ruler with mm measurements - not ideal to say the least!

I would love to get something like the Clearaudio Protractor or the Dennisen/Nerve Audio Protractors, but such tools are beyond my budget. Is there a less expensive alternative? For example, would a set of 12" digital calipers (with mm readings of course)work?

I see some calipers costing around $35 - great price - are they accurate enough at that price point? No doubt most of these are made in China, which may or may not be a problem.

My budget is not much - less than $50 would be ideal. Any advice would be appreciated.

Holly
oakiris

Showing 1 response by fleib

fleib
1,124 posts
 
Holly,
Do you have a table/arm set-up that might differ from arm specifications, or a vintage arm of unknown mounting distance?

If you use a traditional 2 point protractor or something like a Geodisk, you don't need mounting distance. They are based on the actual location of the pivot not where it theoretically should be. If you want to use an arc protractor you need the exact distance. In that case calipers seem like a good idea.
Regards,
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