<s>
A	O
drafting	B-Application
machine	I-Application
is	O
a	O
tool	O
used	O
in	O
technical	B-Application
drawing	I-Application
,	O
consisting	O
of	O
a	O
pair	O
of	O
scales	O
mounted	O
to	O
form	O
a	O
right	O
angle	O
on	O
an	O
articulated	O
protractor	O
head	O
that	O
allows	O
an	O
angular	O
rotation	O
.	O
</s>
<s>
The	O
drafting	B-Application
machine	I-Application
was	O
invented	O
by	O
Charles	O
H	O
.	O
Little	O
in	O
1901	O
(	O
U.S.	O
Patent	O
No	O
.	O
</s>
<s>
1,081,758	O
)	O
,	O
and	O
he	O
founded	O
the	O
Universal	O
Drafting	B-Application
Machine	I-Application
Company	O
in	O
Cleveland	O
,	O
Ohio	O
,	O
to	O
manufacture	O
and	O
sell	O
the	O
instrument	O
.	O
</s>
<s>
Drafting	B-Application
machines	I-Application
were	O
present	O
in	O
the	O
design	O
offices	O
of	O
European	O
companies	O
since	O
the	O
1920s	O
.	O
</s>
<s>
With	O
the	O
drafting	B-Application
machine	I-Application
one	O
can	O
perform	O
a	O
series	O
of	O
drawing	O
operations	O
that	O
otherwise	O
could	O
only	O
be	O
achieved	O
with	O
a	O
much	O
more	O
complex	O
use	O
of	O
the	O
classic	O
ruler	O
square	O
and	O
protractor	O
,	O
as	O
,	O
for	O
example	O
,	O
drawing	O
parallel	O
lines	O
,	O
orthogonal	O
lines	O
,	O
inclined	O
lines	O
according	O
to	O
a	O
preset	O
angle	O
,	O
measurement	O
of	O
angles	O
,	O
etc	O
.	O
</s>
<s>
With	O
the	O
development	O
of	O
computer-aided	B-Application
design	I-Application
(	O
CAD	B-Application
)	O
,	O
the	O
use	O
of	O
drafting	B-Application
machines	I-Application
,	O
especially	O
in	O
the	O
professional	O
sector	O
,	O
has	O
drastically	O
declined	O
,	O
supplanted	O
first	O
by	O
pen	O
plotters	B-Operating_System
,	O
and	O
then	O
by	O
large-format	O
inkjet	O
printers	O
.	O
</s>
