Narrod,
I'm not trying to "sell" you anything. I'm just sharing my experience. Ken's protractor is fine, I'm sure, and if you are happy with it who cares what anyone, including me, says. Other people whose opinions I greatly respect and value are perfectly happy with their 2-point, one-size fits most, protractors. I do have a KWILLIS protractor file that Palasr sent me, but I have not printed and tried it out for reasons I'll explain below. If Ken would like to send me one that he designed and made for a TriPlanar VII I'd be more than happy to compare it to my MintLP protractor. ;-)
If a protractor is not mirrored there is a good probability of user error due to the parallax effect that Palasr posted about. If it is printed out on what ever printer one has to use, the thickness of the lines vary from user to user. This is another source of error. Perhaps Ken has a means to produce lines with a thickness of around .008". If so that would certainly boost the accuracy a user could achieve by using a protractor that he printed for them.
These issues also exist for the protractor that Thom sent around to some of us to try, which is also a printed out protractor. I doubt that Ken's is anymore accurate than what Thom designed. Perhaps Ken can print much more accurate lines. Even with these issues I was still able to get better results using Thom's printed protractor than with the mirrored protractor supplied with my TriPlanar. Still there is that parallax issue.
So for another $35 over the cost of a KWILLIS protractor, I chose to purchase a protractor that addresses both of these issues by offering more precise lines and a mirrored surface.
I see this as just a comparison between tools. I freely admit that this is getting into the realm of obsession over cartridge alignment. Even so, there is no disputing that the more accurately you can get the alignment, the more you will be rewarded from the sound from your cartridge.
My apologies to Stiltskin if I've helped steer too far off the subject of his thread.
I'm not trying to "sell" you anything. I'm just sharing my experience. Ken's protractor is fine, I'm sure, and if you are happy with it who cares what anyone, including me, says. Other people whose opinions I greatly respect and value are perfectly happy with their 2-point, one-size fits most, protractors. I do have a KWILLIS protractor file that Palasr sent me, but I have not printed and tried it out for reasons I'll explain below. If Ken would like to send me one that he designed and made for a TriPlanar VII I'd be more than happy to compare it to my MintLP protractor. ;-)
If a protractor is not mirrored there is a good probability of user error due to the parallax effect that Palasr posted about. If it is printed out on what ever printer one has to use, the thickness of the lines vary from user to user. This is another source of error. Perhaps Ken has a means to produce lines with a thickness of around .008". If so that would certainly boost the accuracy a user could achieve by using a protractor that he printed for them.
These issues also exist for the protractor that Thom sent around to some of us to try, which is also a printed out protractor. I doubt that Ken's is anymore accurate than what Thom designed. Perhaps Ken can print much more accurate lines. Even with these issues I was still able to get better results using Thom's printed protractor than with the mirrored protractor supplied with my TriPlanar. Still there is that parallax issue.
So for another $35 over the cost of a KWILLIS protractor, I chose to purchase a protractor that addresses both of these issues by offering more precise lines and a mirrored surface.
I see this as just a comparison between tools. I freely admit that this is getting into the realm of obsession over cartridge alignment. Even so, there is no disputing that the more accurately you can get the alignment, the more you will be rewarded from the sound from your cartridge.
My apologies to Stiltskin if I've helped steer too far off the subject of his thread.