surveying instrument cheap total station DADI DTM624R

Technology Parameters Non-Prism Laser Ranging Total Station DTM624R DTM624R6 Model：DTM624R/DTM624R6 Distance Measurement Section Non-prism：400m/600m Prism:Single prism 3000m          Triprism       5000m Accuracy：Non-prism：±(3mm+2ppm.D)                 Prism：±(2mm+2ppm·D),±(3mm+2ppm.D) Unit：m/ft Display：MAX:99999999.9999m              MIN:0.1mm Measuring time：Precise model:1S,Track model:0.8S Number of time Set：1-99 Meteorologiccorrection：Input the value and correct automatic Prism constant：Input the value and correct automatic Angel Measurement Section Method：Absolute coding Grating diameter：79mm Min reading：1” Detection：Horizontal:Diametrical detection                  Vertical:Diametrical detection Accuracy:2"