10092014, 03:35 PM
It is also possible to measure the speed of a table with a stop watch. If you time a lag shot from far rail to stopping just before the near rail, the time in seconds squared times 2 gives you the reciprocal of the effective slope. So, 7 seconds for a lag to travel the length of the table gives:
7*7*2 = 98
slope = 1/98 = 1.0% more or less
On a carom table, it is not uncommon for a lag to take 10 seconds for the last lap of the lag:
10*10*1.8 = 180 (1.8 factor for a 10foot table)
slope = 1/180 = 0.55%
Since most people can do lags and have stop watches or stop watch apps, this is a pretty simple and accurate way to measure table speed.
Also, if a video has a lag, you can pick the speed of the table off the time of the video.
