User manual

Gun Camera-Mark I
GENERAL:
Gun
Camera
Mark
I.
has
been developed for
the
purpose of
i~creasing
the
efficiency of aerial
gunnery
By
its use a graphic record of
the
manner
in which
the
student-aviator
handles his machine
gun
in offensive
and
defensive
combat
is
obtained,
his faults discovered
and
corrections made possible.
This
apparatus
is
mounted in place of
the
maga-
zine on a Lewis aerial gun equipped with
post
fore
sight
and
ring
rear
sig
hts
and
is
operated
by
simply
sighting
the
gun
and
pressing
the
trigger
The
cam-
era
uses
standard
moving picture film,
takes
the
pictures automatically as long as
the
trigger
is
depressed
at
the
rate
of six
per
second, with-
an
ex-
posure of
0\-second,
and
its magazine holds sufficient
film for 97 exposures, this
number
being
the
same
as
that
of
the
cartridges in
the
Lewis four
tier
maga-
zine.
Each
exposure
thus
represents a single
shot
of a Lewis
gun
and
the
films are marked according
to
bur
st
s.
The
magazines are changed in exactly
the
same
manner
that
the
drum
magazines of
the
ordinary
gun
are replaced,
and
each
gun
camera
outfit
is
supplied with a
total
of
three
film maga-
zmes.
8