Product Name: Range Finder (SF-60) Model NO.: SF-60 Horizontal Line: 1 Vertical Lines: 4 Accuracy: 1mm Origin: Nanjing HS Code: 9015900090 Product Description Function:Measure distance directlyArea MeasurementVolume MeasurementHigh accuracyQuick measurement of distance area and volumeContinuous measurementAdditiong and Subtraction functionMax and Min value displaySwitchable among m in ftAuto power offInstrument maintenancetions: The meter should not be stored in high temperature and strong humidity environment for long-term; if not used for long time, please take out the battery and place the meter in the allocated potable bag and store in cool and dry place. Please keep the device surface cleaning. Wet soft cloth is applied to clean dust, but erosion liquid is never allowed to use for the meter maintenance. Laser output window and its focus lens can be maintained according to maintenance procedures for optical device.Tips:During operation, tip information may appear on the main display screen as follows:Err1:Signal too weakMeasure target locations which are with stronger reflecting capabilityErr2:Signal too strongMeasure target locations which are weaker reflecting capabilityErr3:Battery voltage is too lowReplace batteryErr4:Beyond working temperatureCarry out measurement with the meter in the specified scopeErr5:Improper Measurement on Pythagorean propositionRe-measure, and ensure the length of hypotenuse is longer than that of right-sideErr6:Memory damagePlease contact the supplierFor more details, please refer to our website or our general catalogue.MedelSF-60SF-100Measuring Range60m100mMeasuring Accuracy±2mmMeasuring Unitmm/in/ftContinuous MeasurementYesArea MeasurementYesVolume MeasurementYesIndirect MeasurementThe complete modelAddition/SubtractionYesMax/Min MeasurementYesMax storage20Unit30UnitBacklightYesKey Sound promptYesLaser Level11Laser Class635mm,<1mWAutomatic laser off20sAutomatic shutdown150sStorage Temperature-20°C- 60°COperating Temperature0°C- 40°CStorage HumidityRH85%Power Supply1.5V 3AAAWeight(Including Battery)180gSize123*54*28mm