Well, I ordered a usb microcope from Amazon. It's was quite reasonably priced, so I'm hoping it works.
It's supposed to come with measurement software for Windows applications. See here:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
While I hope to check SRA on my setup, I mainly want it to monitor stylus wear. My DL-304 has been in use now for 5 years, and since it didn't come with an hour meter like my Yamaha outboards,
I can guess it must have at least 800 or so hours on it.
This should be interesting.