> 1. Never use a torque wrench with a universal joint or a swivel socket or a
> wobbley extension or a flexible-shaft extension.
Not if you care about the torque setting anyway...
>2. Never use a torque wrench with a LATERAL offset extension between the socket
> and the square drive of the T.W., such that the socket and square drive are no
> longer coaxial. (I've never seen such a thing, but I imagine it could exist.)
This is fine, actually, as long as you do the correction calculation.
You will need an exact measure of the offset.
> 3. Never use a crow foot socket with a T.W.
This is just a special case of point #2, and is OK if you correct for the
offset.
>4. When using a standard (normal, straight, co-linear, co-axial) extension, use
> your other hand to steady the T.W. at the square drive "head" end.
This is not such a good idea really. Any torque you apply with the spare
hand will distort the reading of the torque wrench. Maybe this is a fiddly
point, but if you care enough about the actual torque to bother using a
torque wrench to begin with, you might as well get it exactly right...
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John R. Lupien
lupienj@wal.hp.com
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