Prompted some memories of using another trackball. Back in maybe the late 80’s/early 90’s the Microsoft Ballpoint Mouse[1] was my preferred pointing device. It

Prompted some memories of using another trackball. Back in maybe the late 80’s/early 90’s the Microsoft Ballpoint Mouse[1] was my preferred pointing device. It didn’t require a smooth surface like a normal mouse, was very portable, and attached to the side of basically any laptop. However, it included a pressure collar of sorts, which increased the ratio of static vs. kinetic coefficient of sliding friction. Basically any time you started to move the mouse the pointer would jump. Fine movement was very difficult. The solution was to unscrew the retainer ring, remove the pressure collar, and reassemble. Problem solved; after that it was a joy to use. [1] https://www.microsoft.com/buxtoncollection/detail.aspx?id=224 https://www.microsoft.com/buxtoncollection/detail.aspx?id=22...