Just by the way....

I've looked online, recently, to find torque wrench calibration companies. Easy enough -- plenty exist.

One place charges from about $20 to about $100+ for calibration.

Or/but ... you can also DIY for free -- the route that I'll be taking.

While a perfectly accurate torque wrench would be a nice thing -- like many such instruments -- it's enough to know the degree and direction of error. Doing the math, on the fly, is a fairly simple thing. If you can take reasonable care of a $20 Harbor Freight clicker, then -- provided you know ITS degree of error -- it may be a fairly reasonable tool that lasts a good long time....