Sanwa Supply Gravi
prevent finger maul by using a trackball. People who know me would tell you that I am a big fan of trackball as a replacement for using a mouse. Having tried a couple of different trackballs, the one I am currently using is the Sanwa Gravi, made by Elecom from Japan 🇯🇵. Thus far, it is one of the better ones I have used, espcially if you replace the stock bearing with a ceremic one....