i was at a friends house while he was working
on his truck changing the oil
being the good " hand me the tools " assistant
i kept watch for girls going wild and alien invasions
as i was playing with the oil changer thingy
i got to thinking about using this " tightening " principle
to lockpicking as a tension tool
so here's what i came up with
A is between 1 and 1 1/4 inch
B is about four inchs

from the front

from an angle

from the top

this " prototype " is only made of paper
because the one i started with was a feeler gauge
BUT i was careless when i was cutting/shaping it
Good News
this design would leave
the whole keyway open for a pick
Bad News
whether one brings the ends together permanently ( as i have done )
or leave it flat and shape it into position every time it is used
this is a very delicate tool
i don't think it would take too much wear and tear
but hey, it's something different