Сue testing unit
When testing the cue, especially in a comparative test, the main problem is subjectively factor. Well, is not given to man to accurately reproduce the motion and force of impact cue. Each time the strike would be any different from the last. Resolve this uncertainty can only mechanical system, which every time will execute one and the same operation, quite accurately repeating the same impact parameters. I admire the enthusiasm of Alexander Sorokin, who made such apparatus. What apparatus? 😉 Judge for yourself. In my opinion the design rather witty and reliable.