Stonex R2 Dual Axis Total Station 600m Total Station ModelR2TelescopeMirror tube length156mmimagingPositiveEffective diameter of objective lens(EDM)45mmMagnification30Xfield1°30′Discrimination (JIS)3.5″Shortest range of visibility1.0mRange finderRanging light source(visible lase)650~690nm Spot diameter12mm/50mm ellipseLaser gradeClass3Measuring range(good weather condition)Non-prism600mReflector RP601000mMini prism1200mSingle prism5000mPrecision of distance measurementPrism±(2+2x10-6·D)mmReflector,Non-prism±(3+2x10-6·D)mmMeasurement time1.0s/0.3s(precision / tracking); initial:2.5sMinimum reading of distance measurementPrecision measurement mode:1mmTracking measurement mode:10mmRange of temperature setting-40ºC~+60ºCtemperature range 1ºC(automatic correction)Atmospheric correction500hPa-1500 hPaatmospheric pressure1hPa(automatic correction)Prism constant correction-99.9mm ~ +99.9mm