I think i heard on AZ about a portable score keeping box with counters. Does anyone have knowledge of this portable type box? It would sure be better than the counter wheels on a Brunswick table!
You can buy the table counter mechanisms and mount them on anything you want; a box, a tray, a cue holder. A two-counter mechanism is only 5-3/16" X 1-15/16" so they'll fit pretty much anywhere.