High Precision Handheld Digital Laser Distance Meter Range Finder Distance Measuring Instrument (LM40 ) Condition: Item Type: Laser Rangefinder Material: ABS Color: As shown in the picture Type: LM40, LM50, LM100(Optional) Weight: Approx.178g/6.3oz Model LM40 LM50 LM100 Screen Negative display screen Positive display screen Screen size 2in Range (m) 40 50 100 Minimum display 0.001m Measurement unit m/ft/in/ft+in Measuring basis Front/rear basis Measurement accuracy ±2mm Single measurement √ Continuous measurement √ Maximum/Minimum √ Area measurement √ Volume measurement √ Pythagorean measurement √ Automatic level N/A √ Automatic vertical N/A √ Addition and subtraction √ History record 20 group Automatic shutdown (s) 180 s Automatic shutdown laser (s) 30 s Automatically turn off backlight (s) 10 s Physical horizontal bubble √ N/A Electron level angle N/A √ Inclination measurement range N/A ±90.0° Battery indicator √ Battery 2xAAA 1.5V(Not included)