Pantograph
Definition of Pantograph
Pan´to`graph
n.
1.
An
instrument
for
copying
plans
,
maps
, and other
drawings
, on the same, or on a
reduced
or an
enlarged
,
scale
.
2.
An
electrical
conducting
device
consisting
of a
collapsible
frame
resembling
a
pantograph
{1},
connected
to the
top
of an
electrically-powered
vehicle
such as a
trolley
, and used to
conduct
electrical
current
between
the
vehicle
and an
overhead
electric
wire
, which
supplies
the
power
to the
vehicle
. The
variable
height
of the
pantograph
ensures
that it can
move
to
follow
variations
in the
height
of the
overhead
wires
, and
thus
make
constant
contact
with the
wires
.
Skew pantograph
a
kind
of
pantograph
for
drawing
a
copy
which is
inclined
with
respect
to the
original
figure
; - also
called
plagiograph
.
Related Words
mechanical
device
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