a current related thread
https://forum.audiogon.com/discussions/vta-on-the-fly
others have shown you the clear plexi blocks with mm grids,
I got this clear plastic protractor, can set it behind the stylus, light goes thru it ...
I scratched a few reference lines in the plastic, one 15 degrees for my Shure V15, to get started.
https://www.amazon.com/gp/product/B01HF9PEA4/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1
https://forum.audiogon.com/discussions/vta-on-the-fly
others have shown you the clear plexi blocks with mm grids,
I got this clear plastic protractor, can set it behind the stylus, light goes thru it ...
I scratched a few reference lines in the plastic, one 15 degrees for my Shure V15, to get started.
https://www.amazon.com/gp/product/B01HF9PEA4/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1