Feickert Protractor - anyone use one?

Sorry Stiltskin if I was unclear.
If I try to set up the Copperhead by adjusting the cartridge to follow the arc of the WallyTractor which (correct me if I'm wrong) has the same mirrored base and inscribed arcs as the Mint, I can't seem to achieve a perfect match without taking hours and hours.
However if I adjust the Copperhead using the Feickert and THEN run it over the WallyTractor arc, Le Voila!!!

And yes you are right......the proof is definitely heard in the playback.

Henry Yes using an arc protractor for some can wear patience fast,for me,by the third attempt every step became a whole lot easier.
Setting up your Copperhead with the Feikert are you saying your stylus follows the inscribed arc of the Wally?

One major feature of a mirrored arc tractor its designed to allow the ability to align the cantilever and stylus tip to a extreme degree of accuracy which further reduces distortion.

And yes the MintLp and Wally tractors are similar as far as design goals are.
However the Wally as far as I know right now is next to impossible to get.

Yes Stiltskin, when I set up the Copperhead with the Feickert (20 minutes), it then follows the arc of the Wally Tractor (Baerwald)....perfectly!
Regards
Henry

The Feikert VS The Mint, well Henry you beat me by about 10 minutes.

More time for whisky and music :-)