Brief DescriptionThis Professional Distance Meter-employs laser technology to measure distance， area and volume accurately， quickly and conveniently. It has a wide measuring range 40m (131ft) and particularly high accuracy ��2mm. In addition， this meter can make use of Pythagorean Theorem to measure distances or lengths indirectly when direct measurement is not feasible. This meter also has various functions including continuous measurement，addition/subtraction function and Max/Min measurement. Other main features are including 100 data memories，switchable units (metre， inch &feet) &backlight LCD with multi-line display. The bubbles level equipped can be used as a spirit level tool. Laser distance meter has a wide variety of applications in construction and industries. It is very useful and convenient to give accurate measurement of distance， area and volume especially in large areas such as rooms， apartments， buildings， real estates， factories， warehouses， gardens， roads， infrastructures， etc. Features High accuracyQuick measurement of distance， area and volumeAutomatic calculation of area and volumeIndirect measurement by Pythagorean TheoremContinuous measurementMin/Max distance trackingEasy addition/subtraction of measurementSwitchable among meter(m)， inch (in)， feet (ft)Easy targeting with bright laser pointerLarge LCD with back-lightDisplay illumination and multi-line display100 data recordsBubble level-equipped as a spirit level toolAuto correction and error report technologyLow battery indicationAuto / manual power off functionSelf-CalibrationSpecificationsMeasuring range: 40m (131ft)，60m(196ft)，80m(262ft)，100m(328ft)Accuracy:��2mm(��0.08 inch)Laser class: Class II Laser type: 635nm， <1mWData record: 100 recordsOperating temperature: 0 ~ 40 ��C (32 ~ 104 ��F)Store temperature: -20 ~ 60 ��C (-4 ~ 140 ��F)Auto power off:after 150 secsAuto cut off laser: after 30 secsPower supply: 2 x 1.5V AAA batteries (Included)Battery life: up to 3000 measurementsDimension: approx. 118 x 54 x 28 mm (4.65 x 2.13 x 1.10 inch)Weight: approx. 180 g (6.35 oz) (battery included) One Set Included1 x Laser Distance Meter1 x Pouch1 x Holding Rope2 x 1.5V AAA Battery1 x Instruction manualStandard Factory Package