Model numbers 117 vs 207 and external physical features
In stainless, and in New in Box (NIB) a Ruger Speed-Six in 9x19 is worth $1,000+ as of 2010. In stainless, and in like-new condition, a Ruger Speed-Six in 9x19 is worth $700+ as of 2010. The 9x19 version of the Speed-Six is quite rare in the U.S. since only a few were sold in the US from European and Israeli military/security contract overruns.
The difference is that constant speed doesn't change but variable speed does. (change)
Nothing...
Velocity is speed with direction
The technical difference is that speed has no direction but velocity has one.
difference between 3 and four speed is, a 3 speed has 3 forward gears. a 4 speed has 4 forward gears
Revolver
5 speed is faster
The difference between an object's speed and an object's velocity is that the object's speed is how fast it is going, and the object's velocity is how many units of speed the object has traveled.
Instantaneous speed is speed measured at a specific time. Speed is an average.
The Ruger web site has sn data if you can get to it.
1968 - 1988.