1 609 92A 25B | (16.2.16)
Bosch Power Tools
18
| English
Assembly
Inserting/Replacing the Batteries (see figure A)
Make sure to switch the laser off before changing the batteries.
An
accidentally switched on laser can blind other persons.
Using alkali-manganese or rechargeable batteries is recommended for
operation of the measuring tool.
To open the battery lid
5
, press on the latch
6
and fold the battery lid up.
Insert the batteries. When inserting, pay attention to the correct polarity
according to the representation on the inside of the battery lid.
Battery Indicator
The rechargeable battery/battery indicator
b
always displays the current
battery status:
Always replace all batteries/rechargeable batteries at the same time. Do not
use different brands or types of batteries/rechargeable batteries together.
Remove the batteries/rechargeable batteries from the measuring
tool when not using it for longer periods.
When storing for longer
periods, the batteries/rechargeable batteries can corrode and self-
discharge.
Mounting the Leg Extension
Slide the leg extension
21
onto the fold-out leg
1
from the front. Observe the
arrow on the leg extension when doing so. Slide the leg extension as far as
possible over the joint of the measuring tool.
Operation
Initial Operation
Protect the measuring tool against moisture and direct sun light.
Do not subject the measuring tool to extreme temperatures or varia-
tions in temperature.
As an example, do not leave it in vehicles for a long
time. In case of large variations in temperature, allow the measuring tool
to adjust to the ambient temperature before putting it into operation. In
case of extreme temperatures or variations in temperature, the accuracy
of the measuring tool can be impaired.
Avoid heavy impact to or falling down of the measuring tool.
After
severe exterior effects to the measuring tool, it is recommended to carry
out an accuracy check (see “Accuracy Check and Calibration of the Meas-
uring Tool”, page 22) each time before continuing to work.
Batteries
Rechargeable batteries
4 x 1.5 V LR6 (AA)
4 x 1.2 V HR6 (AA)
Operating lifetime (alkali-manganese batteries)
approx.
1)
50 h
Automatic switch-off after approx.
30 min
Leg length
600 mm
Weight according to EPTA-Procedure 01:2014
1.7 kg
Measuring range of grade measuring device
0–360° (4 x 90°)
Measuring accuracy of grade measuring device
– 0°/90°
– 1°–89°
±0.05°
±0.1°
Working range of laser
2)
30 m
Vertical levelling accuracy of laser
±0.5 mm/m
Horizontal levelling accuracy of laser
±1 mm/m
Clearance of laser exit – bottom edge of measuring
tool
30 mm
Laser class
2
Laser type
650 nm, <1 mW
Laser beam diameter (at 25 °C) approx.
– at 5 m distance
– at 10 m distance
3 mm
8 mm
Relative air humidity, max.
90 %
Dimensions (length x width x height)
684 x 52 x 60 mm
IP 54 (dust and splash proof)
The battery is over 90 % charged
The battery is between 60 % and 90 % charged
The battery is between 30 % and 60 % charged
The battery is between 10 % and 30 % charged
The empty battery indicator flashes. The battery charge status is
under 10 %. You can measure for approximately another 15–20
minutes from when the flashing begins until the tool shuts down.
Digital angle and grade measuring device
GAM 270 MFL
1) Operating duration without laser
2) The working range can be decreased by unfavourable environmental conditions
(e.g. direct sun irradiation).
The measuring tool can be clearly identified with the serial number
13
on the type plate.
OBJ_BUCH-2370-003.book Page 18 Tuesday, February 16, 2016 3:45 PM
