Addison Technology professional trackball

By Xah Lee. Date: 2019-02-24.

Ball diameter: 51 mm [see Trackball Ball Replacement]

Ball weight 3 oz

Ball diameter 2 inches

Sensing Mechanical

Resolution 300 dpi

Tracking speed Up to 600 mm/s

Interface 9-pin serial (RS-232 DE9)

Price $15 (1994)