red

Greetings, I understand that it is a common method to use SPDT switches to measure key velocity by measuring the time between the initial break and the second make. For this to work effectively I would think that we need at least two characteristics for the switch: 1) A fairly long travel (it is under a instrument key after all so some distance would be nice) 2) A period of time in the travel between the first connection being broken and the second connection being made. (Ie, it can't just go from one to the other, there has to be some "not connected". Could someone please reccomend me a switch that would be good for this application? Thanks, Red