[aigel]

You can run two wrenches against one another pretty easily - not a bad comparison. Some of the geeks on the board also came up with hanging weights off the wrench fixed in a vise at a foot or two to coarsely check. Not a $20k calibration tool but probably close enough for comfort.

I would not buy a torque wrench used on Ebay. It is a measurement device ... too much uncertainty for the savings realized. I'd buy simple hand tools like a ratchet or wrench but I found that the savings are minimal and you always wonder if it is somoene's loot ...

Just my two cents ...

G