GM40D Professional 40m Laser Distance Meter w/ High Accuracy ±1.5mm

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Model: GM40D


Professional Distance Meter with auto correction & error report technology uses laser technology designed to give special users a high accuracy, one person distancearea and volume measurement precisely in an instant and estimating tool to measure remote and difficult reaching places. It can make use of Pythagorean Theorem to measure distances or lengths indirectly when direct measurement is not feasible. 


Designed with many functions and features to make measuring easier including continuous measurement,addition/subtraction function and Max/Min measurement. Other main features includes 20 data memories, selectable metre, inch & feet unitsbacklight LCD with multi-line display and IP54 dust & splash proof.


A very useful tool for various types of applications in construction and industries and a very convenient to that gives accurate measurement of distance, area and volume especially in large areas such as rooms, apartments, buildings, real estates, factories, warehouses, gardens, roads, infrastructures, and many other applications requiring accurate results for distance , area and volume measurement.


  • Wide measuring range of up to 40m
  • Automatic calculation of area and volume
  • Instant measurement of distance, area & volume with one-button operation
  • 2 or 3 Indirect measurements by Pythagorean Theorem
  • High accuracy
  • Easy addition/subtraction of measurement
  • Front or rear edge reference
  • Selectable meter(m), inch(in) and feet (ft)
  • Easy targeting with bright laser pointer
  • Large LCD with backlight and multi-line display
  • 20 data records
  • Reduce estimation errors, saving time and money
  • Auto correction and error report technology
  • Battery Status Indication
  • Auto / manual power off function
  • Easy targeting with bright laser
  • Multifunction with intelligent calculation
  • Designed for indoor and outdoor use
  • Compact & handy
  • With CEROHSFCCLVD for Laser (60825-1-2007), LVD (EN 61010-1-2001) International Standards


  • Measuring range: 40m (131ft)
  • Display illumination and multi-line display: Yes with 4 lines display including Max/Min value
  • Accuracy: ±1.5mm (±0.06 inch)
  • Laser class: Class II
  • Laser maximum Output: <1mW
  • Laser Wavelength : 630 - 670 nm
  • Measurement record : 20 records
  • Indirect measurement using Pythagoras : Support 2, 3 indirect measurements
  • Intelligent Calculations: Auto area and volume calculation
  • Laser Auto off :  30s without any operation
  • Power Auto off  : 3min without any operation
  • Dust-proof and splash-proof: IP 54
  • Min/Max Distance Tracking : 3~4 data update per second
  • Measuring units : meter / inch / feet / feet & inch
  • Work principal : Photoelectric (do not shake while measuring)
  • Measurement Speed: 3 time/s
  • Low Power Consumption
  • Battery Life: up to 3000 measurements
  • Buzzer indication
  • White Backlight display w/ auto switch off function
  • Auto Bias Technology, support for external calibration
  • Auto Data Hold
  • Data Clear
  • Battery indication: High, Mid, Low
  • Operating temperature: 0 ~ 40ºC (32 ~ 104ºF)
  • Storage temperature : -10 to 60°C (14 to 140°F)
  • Power supply: 2 x 1.5V AAA batteries (included)
  • Dimension: approx. 128 x 50 x 28mm
  • Weight (Main Unit): 108g (battery excluded)

Set includes

  • 1 x Laser Distance Meter
  • 2 x 1.5V AAA Battery ( FREE )
  • 1 x Carrying Pouch ( FREE )
  • 1 x Instruction manual
  • Standard Factory Package

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