We are offering electronic theodolite that can be used in third, fourth-order triangulation control surveying, railway, highway, bridge, water conservancy and mine, etc. Engineering surveying as well as building, installing of large equipment. The electronic theodolite is also applied to cadastral surveying, topographic surveying and other engineering surveying. features :continuous operating time of 4 aa alkaline batteries is about 80 hoursabsolute horizontal angle measurement, when this function is active, if the power off, turn on the instrument again and aim the same target, the horizontal angle displays the same readinglarge lcd displaywide temperature range for lcd display :- 20oc to +55ocspecificationsmodeldt202c*1dt202cl dt202dt202ldt205cdt205cldt205cdt205ldt205ddt205dldt205dmdt205dmltelescopeobjective lens45mmmagnification30ximageerectfield of view1o203minimum focus0.9mstadia constant0stadia ratio100angle measurment methodincrementalminimum reading1"/5"accuracy2"5"diameter of circle70mmdisplaysdisplay panelbothilluminationyes tilt sensoryes noyesnoworking range3'/yes/level sensitivityplate level30"/2mm circular level8'/2mm powerbatteryni-mh rechargeable battery / alkaline battery operating time 45 hours 9 rechargable battery) / 80 hours (alkaline battery)othersserial interfacerd-232c baud rate: 9600bps /dimension153x175x328mm weight4.5kg 4.3kgoperating temperature-20oc+55oc