-8-
Digital Laser Measure GLM 20
Measuring range (typical) 6 in - 65 ft (0.15 –20 m
A
)
Measuring accuracy (typical) ±1/8 in (±3.0 mm
B
)
Lowest indication unit 1/16 in (1 mm)
Measuring duration
– typical 0.5 s
– maximal 4 s
Operating temperature +14° F to 104° F (-10° C to +40° C)
Storage temperature -4° F to 158° F (-20° C to +70° C)
Relative air humidity, max. 90 %
Laser class 2
Laser type 635 nm, <1mW
Laser beam diameter 77° F (at 25 °C)
and at 30 ft (10 m) distance, approx. 3/8 in (9 mm)
and at 65 ft (20 m) distance, approx. 3/4 in (18 mm)
Batteries 2 x 1.5V (AAA)
Battery service life in measuring operation, approx. 5 h
Weight 0.2 lb (0.1 kg)
Dimensions 4 x 1.4 x 0.9 in (100 x 36 x 23 mm)
A) The working range increases depending on how well the laser light is reflected
from the surface of the target (scattered, not reflective) and with increased brightness
of the laser point to the ambient light intensity (interior spaces, twilight). In unfavorable
conditions, e.g., with extreme interior illumination or a badly reflecting surface, the
measuring range may be limited.
B) In unfavorable conditions, e.g., with extreme interior illumination, badly reflecting
surface or the room temperature deviating heavily from 77°F (25°C), the maximum
deviation can be up to ±7 mm per 15 m. In favorable conditions, a deviation influence
of ±0.05 mm/m must be taken into account.
The measuring tool can be clearly identified with the serial number 5 on the type
plate.
Technical Data
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