I've been using the same one big greg mentioned. (Also paid full price for it :-)). Run the table with VPI's ADS. I check speed a couple times a year. It doesn't change.
Measuring turntable speed
Happy Holidays everyone! This has probably been discussed before but I'm of the age that makes me a bit of a Luddite. I have a VPI Scout and SDS. I use "The Ultimate Analogue Test LP" to play the test tone and (at least I used to) the app Dr. Fridrekson(??) had other there. It mysteriously disappeared from my iPad and I can't find it anywhere. What are you using? Thanks!