Brake bias dial for sim racing. I use this with a bodnar joystick controller and a CTS288 rotary
...さらに表示 encoder.
http://www.leobodnar.com/shop/index.php?main_page=product_info&cPath=94&products_id=204
http://www.leobodnar.com/shop/index.php?main_page=product_info&cPath=98_75&products_id=191
