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4. INTRODUCTION
• Measures distances of up to 40M, in metres or
feet.
• Measures the shortest distance to target with
Dynamic (continuous) measuring.
• Measures area and volume
• Indirect measuring using Pythagorean theorem.
• Choice of 2 reference points.
• Impact-resistant rubber casing.
• Tripod-ready.
4.2 SPECIFICATION
Stock no. .................................................................................................................................15102
Part no................................................................................................................................LDM-40M
Measuring Range ........................................................................................................... 0.2M - 40M
Accuracy....................................................................................................................... ±2mm@40m
Laser .......................................................................................................... Class 2 , 635nm, <1mW
Battery ........................................................................................................... 2 x AAA (not supplied)
Operating Temperature ................................................................................................. 0°C to 40°C
Storage Temperature ................................................................................................. -10°C to 60°C
Auto-off: Laser................................................................................................ 30 seconds (Approx.)
Auto-off: Unit................................................................................................. 180 seconds (Approx.)
Dimensions................................................................................ 120mm x 50mm x 30mm (Approx.)
Weight .............................................................................................................. 114g (with batteries)
4.3 TECHNICAL SPECIFICATION
Distance measurement precision ..................................................................................±2mm@40m
Measurement unit options .....................................................................................................mm/in/ft
Continuous measurement function.............................................................................................. Yes
Area measurement function ........................................................................................................ Yes
Volume measurement function.................................................................................................... Yes
Pythagorean proposition measurement function................................................................Full mode
Add and subtract measurement function..................................................................................... Yes
Min/Max value ............................................................................................................................. Yes
Max storage...........................................................................................................................20 units
Automatic backlight ..................................................................................................................... Yes
Buttons/key sound....................................................................................................................... Yes
NOTE: There will be a bit of greater differences of measurement results in harsh environment,
such as strong sunlight, excessive temperature fluctuations, weak reflective surface, low battery.
As to this, large reflection board as auxiliary will assist to get a better result.
4.1 SCOPE
10. TROUBLESHOOTING
All information will be displayed in the form of code or “Error”. Now display codes and relevant
solutions are listed below:
Code Reason
Solution
204
208
220
252
253
255
Miscalculation
Electric currents exceed standard
Low battery
Too high temperature
Too low temperature
256 Too strong receipt signal
The receiving reflected light is
weak, or measuring time is too
long.
Operate again upon requirements of manual
Please contact with your dealer
Please change battery in time
The external measurement temperature of
instrument shall be kept at 0°C-40°C
Please raise temperature for instrument
The reflect light of target is too strong (use
sighting board, or don’t direct at hard light)
The reflecting surface will be reflected more
easily, or use sighting board, white paper etc.
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