Cheap Total Station Angle Accuracy 2" Ruide R2 Total Station TELESCOPELength154mmObjective Lens DiameterTelescope:45mm Distance Meter:50mmMagnification30XImageErectField of View1°30′Resolving Power3″Mini.Focus1.0mDISTANCE MEASUREMENTSingle Prism4000m*1Non-Prism400m*2Accuracy -Prism Mode±(2mm+2ppmxD)m.s.e.*3 -Non-Prism Mode±(3mm+2ppmxD)m.s.e.*3Measuring TimeFine:0.7s,Normal:0.5s Fine:0.3s,Nomal:0.2s*4Meteorologic CorrectionATMOSense(Auto Sensing)Prism ConstantManual InputANGLE MEASUREMENTMethodAbsolute EncodingDetecting SystemH:2sides,V:2sidesMin.Reading1″/5″Accuracy 2″Diameter of Circle79mmVertical Angle 0°Zenith 0°/Horizontal:0°Unit360°/400gon/6400milDISPLAYDisplay UnitGraphic LCD 160x90Dots with White BacklightNo.of Unit2 sidesKeyboardAlphanumeric KeyTILT CORRECTIONTILT SensorDual AxisMethodLiquid ElectricRange±4′Setting Unit1″LEVEL SENSITIVITYPlate Level30″/2mmCircular Level8′/2mmOPTICAL PLUMMET (OPTIONAL:INTERNAL LASER PLUMMET)ImageEtrctMagnification3XFocusing Range0.3m~∞Field of View5°DATA STORAGE &INTERFACEInternal Memory>10,000points or >20,000 coordinatesDate InterfaceRS 232/SD-card/Mine-USBGENERALGuide LightNOWeight&Dimension5.4kg,340mm(H)x160mm(W)x150mm(L)Working Temperature-20℃~+50℃Battery TypeRechargeable Li-on Battery 3000mAhBattery VoltageDC 7.4VWorking Time16h