Originally Posted by
loimpact
Second, suggesting that the Ritchey tool is off by any particular amount would suggest that you even know how the thing's built/engineered. Not that it isn't safe to assume it has error, I just think it's probably not the wisest statement to know it's a half nm or full nm whilst armchair quarterbacking the situation.
Ritchey is not a tool maker. They make bikes and bike parts. No wrench is perfect and similar torque wrenches from quality tool manufacturers are in the 10% range.
For reference, wiha tools (
Torque Control! Easy-Torque Economy Drivers Factory Pre Set From Wiha) are in the +/- 10% range for a $45 tool. If you want +/- 6% the price goes up to over $200.
It's possible the $16 Ritchey tool is accurate to +/-2% but if you believe that I have a little bridge to sell you...