RedBack Lasers ARL509, Instruction Manual, Page: 8 / 12

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Vertical Rotation Operation for Site Layout
ARL509
TM
OPERATING INSTRUCTIONS
The ARL509
TM
can be used on its side for vertical alignment or together with
the dot laser out of the front to produce a 90 degree square for site layout.
The ARL509
TM
can be placed on its side with the datum marker over the
correct point and the laser levelled with the bubble vial and manual levelling
knob.
For site layout squaring;
• Place datum marker over the datum point marking the conjunction of
the 90 degree lines.
• Align laser housing so dot is striking target point along the one line of
the 90 degrees, adjust the housing of the laser left and right to achieve
this.
• Once the dot is on the target use the receiver to pick up the rotating line
on the second line of the 90 degree. Your square is now set.
Using the ARL509
TM
with the built in Wall Mount
The ARL509
TM
side mount
plate can be used either on the
ground on on a tripod using
the 5/8” – 11tpi screw thread
or it can be used as a basic
wall mounting bracket. Simply
by using the screw hanging
location hole.