I've purchased Turntable Basics mirror protractor more than 10 years ago over the internet and still use it with ease as well as Shure VTF mechanical gauge.
Definitely no need to purchase fancy schmancy digital gauge because at the end you'll still test it by ear and would want to adjust it more to one or another side and see where it's better.
If you're using Turntable Basics protractor try to adjust more precise at inner gauge position. This way you compensate possible stretch of cantilever towards the disk edge.
I don't know about many folks preference here but I've never experienced need to upgrade my protractor and VTF gauge purchased for $25 total more than 10 years ago.
Definitely no need to purchase fancy schmancy digital gauge because at the end you'll still test it by ear and would want to adjust it more to one or another side and see where it's better.
If you're using Turntable Basics protractor try to adjust more precise at inner gauge position. This way you compensate possible stretch of cantilever towards the disk edge.
I don't know about many folks preference here but I've never experienced need to upgrade my protractor and VTF gauge purchased for $25 total more than 10 years ago.