So ya I have one and no Idea on how to use it.

On the handle its numbered 0 9 8 7 6 5 4 3 2 1 in a circle

I know pushing this metal part of the hadnle down allows me to turn the numbered portion up the shaft that is labeled 20 30 40 50 60 70 80 90 100 lbs

On the other side of the shaft torque is listed in N M? metric?

But how do I read it?

 

in between the 20, 30, 40 etc are ten settings...hence the 0-9 on the other indicator.

so if you have it between 20 and 30...and it's on a 4....it's 24lb-ft of torque

should make a clicking sound when it hits the proper torque.

best to torque things in increments...if it has to be 50...go to 45 first...then do a final torque to 50.

 

so to properly torque something at 50, do 45, ok but how much, like a full rotaion?

 

You'll know when you hit the desired torque when the torque arm make a "click" noise and it wont allow you to torque the fastener any further.

 

Ah, you guys are better than an instruction manual