Sure, 100 is 100, but a torque wrench is a lot more accurate than a torque
stick, in my opinion. Torque sticks seem to be rather sloppy, or to put it
differently, the mechanic who last rotated my car's tires did a sloppy job
a torque stick.
You can be fooled by a dishonest mechanic with either torque wrench.
My motorhome lug nuts needed 105 Ft-Lb. After running them up by
hand or with a speed wrench, a responsible mechanic would use a
torque wrench for final tightening to the spec.
The tire department mechanics at Sears in Fairfield California found a
way to do the final tightening in no time at all. They just used an air
impact wrench to slam all the lug nuts to 150 Foot-Lbs, then made a
big show of applying a torque wrench to each nut until it read 105 Ft-Lb.
To the customer, this looked like the mechanic was applying the correct
torque adjustment, but the mechanic was just quickly going through the
motions, as every nut was already overtorqued.
I watched this, and didn't know what to say, so I said nothing. Later
when I got to los Angeles, 3 of 8 studs on one wheel and 4 of 8 studs
on the other wheel were broken off. It was an old motorhome, and
maybe the studs should have survived 150 Ft-Lb, but now I am more
diligent when any mechanical work is done on my vehicles.
Wendy & John.