WallyTools Tractor

dminches said:

I did and it was fine once I selected the correct alignment.

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Do you remember how many hash marks you measured during static friction test at the outer and inner periphery?

Isn't the effective length the distance from stylus to pivot? In which case when you slide a cartridge in a headshell slot and it reaches one of the arcs you ARE using the correct arc for that effective length, no matter what it is numbered as.

Dogberry said:

Isn't the effective length the distance from stylus to pivot? In which case when you slide a cartridge in a headshell slot and it reaches one of the arcs you ARE using the correct arc for that effective length, no matter what it is numbered as.

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Pivot to spindle PLUS overhang = effective length.

Forgive me, but isn't pivot to spindle plus overhang the same as pivot to stylus?

A Wally Tractor arrived today, and combined with the Wally Skater, I took both tables into good light, made sure they were level and did my best with them. The WS has already shown me that the anti-skate setting on my tonearms is very accurate, and today I learned that the single point SME protractor is also infinitesimally close to the settings at multiple points demanded by the WT. This is good! But one issue occurred: the cantileverless Decca Reference is really hard to set up simply for lack of clearance under the cartridge body. A strong light behind it and a pair of magnifying goggles are useful.
It all sounds good, as it did before...
The funny thing is that I really like the simple HTA adjustment on SME arms, where one racks the arm back and forth with an angled hex-screw tool, but despite how easy it is to move them just so (much easier than sliding the cartridge bolts in the headshell), I did not need to move them much at all. I bet if I had cartridges with exposed cantilevers the WT would be the dog's b*ll*cks.
I also have a Dr Feickert protractor, and I think I can say that the Wally Tractor is both easier to use and likely a bit more accurate.

Dogberry said:

The funny thing is that I really like the simple HTA adjustment on SME arms, where one racks the arm back and forth with an angled hex-screw tool, but despite how easy it is to move them just so (much easier than sliding the cartridge bolts in the headshell), I did not need to move them much at all.

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It is the best, most accurate and precise protractor if you have a SME arm.

I've six of them, but four in use currently.