©York Survey Supply Centre 2021
Ref:.. \operat98\instructions 21\263080.qxp 04-01-21
Multi-Digit Pro +
Operating Instructions
KIT CONSISTS OF
Angle and Slope Measurer Multi-Digit Pro +, padded bag,
batteries, user manual
FUNCTIONS
Electronic angle measurer, electronic slope measurer, laser
spirit level, for measuring angles, inclinations, slopes and
plane surfaces
TECHNICAL DATA
Working range angle:
0° - 180°
Resolution:
0.1°
Accuracy angle:
±0.1°
Working range inclination:
0° - 90° or 0% - 100%
Resolution:
0.1° or 0.1%
Accuracy inclination:
0° + 90° (±10°) = ±0.1° /
10° - 80° = ±0.2°
Range of laser:
20m
Accuracy of laser:
±0.3mm/1m
Laser wavelength:
650nm
Laser class:
2
Power supply:
3x 1.5V AA
1x 3V button battery
Operating time:
48hrs
Length (unfolded):
530mm (1000mm)
Weight:
1.2kg incl. batteries
POWER SUPPLY
Open the battery compartment cover on the reverse side of
the instrument and put in batteries (take care of polarity).
Close battery cover again.
Important
Battery symbol flashes when batteries need to be replaced.
IMPORTANT
If “error” is displayed replace button battery (reverse side)
immediately. This button battery secures power supply when
main battery is replaced so that the instrument will keep all
calibration.
Switch off instrument before replacing button battery.
NOTE
Calibration of inclinometer:
- calibrate before first use
- before important measurements
- after a hit or drop
- after a large fluctuation in temperature
FEATURES
ON/OFF
Switch instrument on/off
LASER/CAL
Press button short to switch on/off laser beam.
Press button long to switch on angle calibration
(see chapter, “Check and Calibration”)
CAL
Calibration of horizontal angle
(see chapter, “Check and Calibration”)
MODE
Press button short to select 5 different display modes
(see chapter, “Additional Functions”)
Sound/Light Button
Press button short to switch on/off signal tone - (0° position
of inclination will be confirmed by a signal tone).
Press button long to switch on backlight illumination.
HOLD
Current readings of inclination and angle will be frozen by
pressing HOLD (figures are flashing). By pressing HOLD
again figures will be released.
ADDITIONAL FUNCTIONS
Automatic shut-off
If no button is used for 20 minutes the instrument will switch
off automatically.
Sound
Switch sound function on. The instrument will now show by a
sound signal that horizontal or vertical position approaches.
The closer the position is the denser the sound signal will be.
If the instrument is in correct vertical or horizontal position
the sound will be continuous.
Mode functions [1) - 5) - 1)]
1) Slope indication in ° (14.5°)
2) Slope indication in % (25.9%)
3) Indication IN/FT (3 1/8 IN/FT)
4) Indication IN/FT (3.10 IN/FT)
5) Indication mm/m (258.9mm/m)
Keep mode button pressed to have all mode function switch
fast. The display will not show any values. Release mode
button to return to standard indication.
CHECK AND CALIBRATION
Before starting operation an accuracy check of the
instrument should be carried out in order to make sure
that the instrument works precisely.
Check of slope measurement
Set the instrument down on a flat and even surface and
switch it on. Wait until the display indication appears and
note down measured value (A).
Turn unit by 180° and set it down on the same position as
before. Wait until display indication appears and note down
measured value (B).
If deviation between the two values A and B is more than
0.2° unit has to be calibrated.
Calibration of slope measurement
Set the instrument down on the same flat and even surface
and switch it on. Press button CAL until display shows “-0-”.
Wait approx. 3 sec. and press button CAL again until display
shows “-1-”.
Turn unit by 180° and set it down on the same position as
before. Wait approx. 3 sec. and press button CAL again until
display shows “-2-”. After approx. 2 sec. display will show
slope value. Now calibration is completed.
CHECK OF ANGLE MEASUREMENT
Set the instrument down on a flat and even surface and
switch it on. Wait until display indication appears and note
down measured value (C).
Unfold angle ruler and set it down on the same position as
before. The angle ruler must be flat on the surface. Wait until
display indication appears and note down measured value
(D).
If C > 0.1° or D ≠ 180 ±0.2° unit has to be calibrated.
Calibration of angle measurement
Set the instrument down on same flat and even surface and
switch it on. Keep button LASER/CAL pressed until display
shows “-1-”.
Unfold angle ruler and set it down on the same position as
before. The angle ruler must be flat on the surface.
Wait approx. 3 sec. and press button LASER/CAL again until
display shows “-2-”.
After approx. 2 sec. display will show angle value. Now
calibration is completed.
SLOPE MEASUREMENT
Switch on Multi-Digit Pro +.
Measured inclination value is shown in left display. Standard
unit of measurement is degrees (°) - this can changed to
percent (%) by pressing button MODE. Lay unit on the
surface with blank bottom side only.
The 2 arrows in the display indicate which direction
Multi-Digit Pro + has to be moved in order to reach 0°
or 90° position.
0° - 45.0° Leading to 0° position.
45.1° - 90° Leading to 90° position.
The exact “0” position is shown by double arrows.
Display has automatic digit inversion for overhead
measurements. Reading of measured values is possible
in every position.
ANGLE MEASUREMENT
Measured angle value is shown in the right display (0 - 180°).
LASER BEAM
By switching on the laser beam Multi-Digit Pro + can be used
as a laser spirit level too. The working range extends to 20m.
The height of the laser from the base is 30.5mm.
CONNECTION TO CAMERA TRIPOD
With 1/4” thread (at bottom side) Multi-Digit Pro + can be
connected to a camera tripod.
LOCKING OF ARM
The angle ruler can be locked in any desired position. For
example at an angle of 90° to transfer right angles. Or at an
angle of 180° to extend the unit to 1m (see picture):
