LIMIT 272500109, Operating Manual

Page: 5 / 68

3
OPERATIONS
1. Power On and Off
1.1 Press the ON/OFF key (4) to turn on the display and backlight. The angle between
the arms (6) & (8) will be displayed in degrees (°).
1.2 Press the ON/OFF key for >2 seconds to turn off the unit.
Note: The unit will automatically turn off after 5 minutes of non-use.
Backlight will automatically turn off after 1 minute of non-use. Press any key to turn
on the backlight again.
2. Rotation of display
2.1 Turn on the unit.
2.2 Press the ON/OFF (4) key to rotate the display 180°.
2.3 Press again to return display to normal position.
ON/OFF
3. Calibration
Note: The level is pre-calibrated from the factory and the unit should only be recalibrated
if it has been dropped.
3.1 Close the arms (6) & (8) together.
3.2 Press the ON/OFF (4) and HOLD/SUP (3) keys at the same time to reset angle to 0°.
ON/OFF
HOLD/SUP
4. Hold
4.1 Press the HOLD/SUP key (3) to lock the display value.
4.2 The HOLD indicator will appear and flash on the display.
4.3 Press (3) again to unlock the display value.
HOLD/SUP
5. Supplementary angle
5.1 The supplementary angle is 180° minus the current angle between the arms (6) & (8).
5.2 Press the HOLD/SUP key (3) for >2 seconds to change the display to the
supplementary angle. The SUP indicator will appear and flash on the display.
5.3 Press (3) again for >2 sec. to return to normal angle.
HOLD/SUP
AFB 450
ANGLE FINDER
HOLD/SUP
ON/OFF
MITRE
SPR/CNR/MTR/BVL
RESET
?
o
AFB 450
ANGLE FINDER
HOLD/SUP
ON/OFF
MITRE
SPR/CNR/MTR/BVL
RESET
45
o
180 o - 135 o
= 45
o
GB