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at night when
star
not replace the magnetic
and
does
gator
must
be
whenever possible, and reserving
cloudy periods.
The
sun compass is attached
c.
universal gimbal mounting (figure
ping the instrument
vial
(item 2)
mounting indicates when the instrument
protractor
plate (item 3)
A
date bar (item
shadow bar (item 6) are mounted successively on top of the
a
protractor
plate.
The
parts.
these
any desired setting on the protractor.
slid
along the date bar
bar can
rotated
be
solar plate
the proper time-latitude
to
and the date bar are clamped at the desired settings by
shaped clamping
vertical gnomon rod (item 8) is mounted
It
pivot bolt.
when the proper adjustments
in
is
rod
used
gimbal mounting arm, to obtain
DETAILED
DESCRIPTION.
2.
Oimbal Mounting.
a.
frictionally
1)
readily
to be
in
the bottom support
bolts
slightly
oversize
parallel
pass
to the centerline
the pivot bolts
after
mounting
Level Vial.
6.
vial,
sistant
glass
Gimbal arm.
MAINTENANCE MANUAL
it
is
not cloudy.
with
equipped
in
any direction
to the extended arm of the gimbal
attached
is
4),
an oval shaped solar plate (item
A
pivot bolt
bar
date
can be
the proper date mark.
to
full
360 degrees
a
nut
the lower
on
casts
shadow which
a
conjunction
with
—
The gimbal mounting
prevents the compass
The
holes provided
leveled.
of
provide an adjustment
to
of
the support can
it
has
been leveled.
—
The
vial
level
in
enclosed
It
ready means
provides
a
it
is
the complement of,
So
compass.
both, using
the magnetic
the vehicle
to
item
1)
1,
make
to
is
secured
to the
acts as
(item
7)
full
rotated
a
The
over the surface
setting.
of
end
the
in
falls
on
have
been made.
sighting rod (item 9) on the
a
foresight
or to sight
a
from tilting,
the gimbal mounting are made
in aligning
of
the vehicle.
tightened to
be
is
(item 2)
metal
and mounted
a
cap
for
land navi
The
the sun compass
compass
of
by means
allows tip
which
it
A
level.
level
A
circular
level.
gimbal mounting.
5),
and
pivot for
a
degrees to
360
solar plate can
The
shadow
of
The solar
plate
star-
a
pivot bolt.
of
the center
the shadow bar
This
gnomon
star.
on a
(figure
item
1,
allows
but
for
the mounting
the com
Wing
nuts
rigidly
secure
round, heat re
a
on
leveling the
com-
for
a
be
the
A
the
it
on
the
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