TM 5-6675-348-13&P
(19) "Y" AXIS INDICATOR. The "Y" axis
indicator is an open-legged triangle that
shows orientations of opposite grade axes.
(20) GRADE ADJUST KNOB. Used to adjust
the "X" axis slope percentage of grade
(solid triangle).
(21) GRADE COUNTER WINDOW. Has large
numerals, a decimal point, and a grade
reading indicator. Windows are tilted
downward at an angle so grade readings
are easily visible from ground level even
when tallest tripod legs are used.
b. Operation and Grade Axis Orientation.
(1)
Notice relationship of "X" axis (20) and
"Y" axis (10) Grade Adjust Knobs,
Grade Counter Windows, and triangles
on transmitter housing. A solid
triangle indicates "X" axis and an open
triangle indicates "Y" axis.
(2)
"Y" AXIS GRADE ADJUST KNOB
showing position of Grade Adjust
Knob, Grade Counter Window, and
Open Legged "Y" Axis Triangle on
housing.
(3)
1145-2 Laser Transmitter has two
grade axes that are marked, and when
entering the desired grade into the
rotating beam, the grade axis must be
aligned in the direction of the desired
slope. This is accomplished by sighting
through the telescope mounted on top
of the 1145-2 Laser Transmitter or
sighting along the "V" groove in the top
cover. When one grade axis is on
desired line, opposite axis will be
perpendicular. Large solid and
open-legged triangles painted on side
of unit housing indicate UP SLOPE
and DOWN SLOPE direction. Sample
grade readings.
5-6
Previous Page
