Technical Specifications Geodimeter 650S Pro Angle Measurement Accuracy(Standard deviation Angle Reading(least count based on DIN 18723): 0.3mgon=3cc(1”) Arithmetic mean value(D-bar): 0.01 mgon =0. Icc(0. 1") (horizontal angle Automatic level compensator Standard measurement: 0. 1 mgon Icc (1 Dual-axis with a working range of: t100 mgon= 10c(6) Fast Tracking 0.5mgon=5c(2”) Other features Absolute Encoders DistanceMeasurement Accuracy M.S.E Measuring time Arithmetic mean value (D-bar): +(Imm+ lppm)+(0.0033ft+Ippm) Arithmetic mean value( D-bar): Users decision Standard measurement(Std): +(2mm+ 2ppm)+(0.007ft+ 2ppm) Standard measurement(Std): 3.5sec. Fast Standard (FSTD) +(4mm+2ppm)(0.012ft 2ppm) Fast Standard(FSTD): Fast Tracking(TRK) +(6mm +2ppm)+(0.018ft 2ppm) Fast Tracking (TRK) 0. 4sec Least count Light source: Infrared GaAs diode Arithmetic mean value(D-bar): 0.1mm (0.0005ft Standard measurement(Std): Imm(0.005ft Beam divergence 1.6mrad(16cm/100m) Fast Standard (FSTD) Imm(0.005ft) (0.530ft) Fast Tracking (TRK) 10mm(0.01ft Atmospheric correction -69 to 195ppm continuously Shortest possible range 0.2m(0.7ft) Range No of prisms Option I Option 2 Option 3 Range using Geodimeter prism 571 One prism: 2500m(1. miles) 2000m(1. 2miles) 1500m (0.miles) 125 021. Standard clear One prism long range modes 3500m(. 2miles) 2800m(1.miles) The range is also dependent Triple prism: 3500m(2.2miles) 2800m(1.miles) 2100m(1.3miles) atmospheric conditions and backgro. riple prism long range mode: 4600m(2miles) 3900m (2.5miles) und radiation,Standard clear: no ight prisms 4500m(2miles) 3800m(2. 4miles) 2900m(1.9miles) haze, overcast or moderate sunlight Eight prisms long range mode: 5800m(3 miles) 5000m(3 miles) with very light heat shimmer