元となった辞書の項目
die plate
意味（2）
(metalworking)
A
type
of
die
for
cutting
screw
threads
on
male
fasteners;
it
is
arranged
in
the
form
of
a
plate
of
tool
steel
with
a
graduated
series
of
holes,
each
being
the
die
opening
for
a
certain
size
of
screw.
A
predecessor
of
today's
tap
and
die
sets,
it
is
now
considered
an
antique
type
of
tool,
no
longer
in
common
use
but
still
sometimes
desirable
as
a
collectible
among
tool
collectors.
