DT-200L Series
                                 SPECIFICATIONS
Name of Model DT-205L DT-207L DT-209L
 TELESCOPE
 Length 152mm  152mm  152mm 
 Objective lens 45mm 45mm 40mm
 Magnification 30x 30x 26x
 Field of view 1°30' 1°30' 1°30'
 Resolving power 2.5" 2.5"  3"
 Minimum focus 1m 1m 1m
 Stadia ratio 100 100 100
 Stadia constant 0 0 0
 Sighting collimator Double Double Double
 Electronic Angle Measurement
 Method Absolute Reading Absolute Reading Absolute Reading
 Detecting  Horizontal:2 sides Horizontal:2 sides Horizontal:1 side
Vertical: 1 side Vertical: 1 side Vertical: 1 side
 Minimum Reading                  1" / 5"  5" / 10"  10" / 20" 
0.2mgon/1mgon 1mgon/2mgon 2mgon/5mgon
 Accuracy  5" 7" 9"
 Diameter Circle  71mm 71mm 71mm
 LASER POINTER
 Method Focusing Focusing Focusing
 Wave length / Power 633nm/0.6mW 633nm/0.6mW 633nm/0.6mW
 Laser Class Class 2 Class 2 Class 2
 DISPLAY
 Unit  2 sides 2 sides 1 side
LCD 7segments LCD 7segments LCD 7segments
 DATA OUTPUT
 Serial signal connector (RC-232C)  ---  ---
 ILLUMINATION
 Display
 Reticle  ---
 COMPENSATOR
 Tilt sensor (Vertical)  ---  ---
 Compensating range ± 3'   ---  ---
 OPTICAL PLUMMET TELESCOPE
 Magnification 3x 3x  3x
 Field of view 3° 3° 3°
 Focusing 0.5m ~∞ 0.5m ~∞ 0.5m ~∞
 LEVEL SENSITIVITY
 Plate level 40" / 2mm 40" / 2mm 60" / 2mm
 Circular level 10' / 2mm 10' / 2mm 10' / 2mm
 WATER PROTECTION
 Standard IP66 IP66 IP66
 POWER SUPPLY
 Battery 4AA batteries 4AA batteries 4AA batteries
 OPERATING TIME (Alk.)
 Theodolite only 140h 150h 170h
 Laser only 80h 80h 80h
 Theodolite and laser 45h 45h 45h
 OPERATING TEMP.
  -20°C ~ +50°C  -20°C ~ +50°C -20°C ~ +50°C
 WEIGHT
  4.2kg  4.2kg  3.6kg