>I sure wouldn't want a single handled tap wrench
You would if you were stuck in a corner trying to thread a bolt hole for a machine into a mount, I found that out the hard way a few weeks ago, ended up putting a tap in vice grips....
But the wrench does strike me as a shop made machine wrench....
NB some old lathe chucks had square drive stud bolts, and it's often a good idea to make sure things in a big chuck are reasonable tight, something a long handle would help....
(The stud bolts went away after people figured out that getting your shirt sucked into a lathe isn't healthy...)
