Quote:
Wat_Tyler wrote:
The aircraft grease monkeys send their torque wrenches out regularly to have them calibrated.
This is SOP at any place with actual manufacturing standards. Many places will buy calibration equipment for their tools, others will mail them out, and others will have a company that has all this stuff in a van drive out and calibrate all their tools. A quick Google Maps search for something like "calibration services" can often yield some results.
Generally the schedule is once per year, though that assumes frequent use (a few thousand clicks per year). If you don't abuse torque wrenches by dropping them, and always store them at their lowest torque setting, and only use them a few times per month, then I would only check them like once or twice a decade, as the spring fatigue will be much slower. Though be aware that excessive dirt in the mechanism can also mess up the torque reading, so it's best to not get them very dirty.
A quick test is to get some sockets to connect a newer and older torque wrench together, twist them against each other and see if they click at the same time.
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