• Be sure to power off instrument after use. When
instrument will not be used for a long period, place
it in storage after removing batteries.
• Always use common sense and be cautious when
using tools. It is not possible to anticipate every
situation that could result in a dangerous outcome.
Do not use this tool if you do not understand these
operating instructions or you feel the work is beyond
your capability; contact Milwaukee Tool or a trained
professional for additional information or training.
• Maintain labels and nameplates. These carry
important information. If unreadable or missing,
contact a MILWAUKEE service facility for a free
replacement.
Federal Communications Commission
WARNING
proved by the party responsible for compliance could
void the user's authority to operate the equipment.
This equipment has been tested and found to comply
with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful in-
terference in a residential installation. This equipment
generates, uses and can radiate radio frequency
energy and, if not installed and used in accordance
with the instructions, may cause harmful interference
to radio communications.
However, there is no guarantee that interference will
not occur in a particular installation. If this equipment
does cause harmful interference to radio or televi-
sion reception, which can be determined by turning
the equipment off and on, the user is encouraged to
try to correct the interference by one or more of the
following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and
receiver.
• Consult the dealer or an experienced radio/TV
technician for help.
SYMBOLOGY
Changes or modifications to
this unit not expressly ap-
Volts
Direct Current
LASER RADIATION
DO NOT STARE INTO BEAM
CLASS 2 LASER PRODUCT
Universal Serial Bus (USB)
Magnets
Read operator's manual
Amps
Properly Recycle Batteries
FUNCTIONAL
DESCRIPTION
1. Laser apertures
2. Laser mode indicator
3. On/Off dial
4. Pivot Bracket
5. Battery compartment
6. Fuel gauge
7. Micro adjust
8. USB power outlet
9. Threaded insert
10. Magnets
11. Nameplate (3522-20)
12. Nameplate (3521-20)
1
1
1
6
5
10
10
9
3
11
12
2
3
(3522-20 shown)
6
7
8
4