
ts
the
basic
w
orkings
of
pin
tumbler
lo cks,
and
the
vocabulary
used
in
the
rest
of
this
b
o oklet.
The
terms
used
to
describ e
lo
c
ks
and
lo
c
k
parts
v
ary
from
manufacture
to
manufacture
and
from
cit
y
to
city
,
so
even
if
y
ou
already
understand
the
basic
workings
of
lo
c
ks,
y
ou
should
lo ok
at
gure
2.1
for
the
v
o cabulary
.
Knowing
ho
w
a
lo
c
k
works
when
it
is
op ened
by
a
k
ey
is
only
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