It must be really nice to be able to actually know what the tension is on your spokes. My little knockoff ChiCom spoke tension tool is a very use full tool for me. I use it allot when balancing out my wheels and thier true.
But really, I don't believe any of the numbers on it as being accurate. I guess I should care about this more...
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No matter where you're at... There you are... Δf:=f(1/2)-f(-1/2)