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USED Topcon GPT-8205A Robotic Prismless Total Station

  • USED Topcon GPT-8205A Robotic Prismless Total Station
  • USED Topcon GPT-8205A Robotic Prismless Total Station
  • USED Topcon GPT-8205A Robotic Prismless Total Station
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This is a used Topcon GPT-8205A robotic prismless total station with 5” angle accuracy. The GPT-8200 series brings to the field some of the most advanced instrument features available today, including:

Reflectorless measurement up to 1200m, or nearly 4,000ft.
Advanced reflectorless EDM design with two mode operation
Completely cable-free operation with wireless RC-2II
Radio-free optical data communication
Sophisticated tracking technology without expensive, special prisms
Innovative Movement Anticipation tracking technology

A GPT-8200 Total station combined with the optional RC-2II FastTrak system is the world's most precise robotic one-person survey system. It provides both radioless, reflector-less distance measurements to 400' and instant lock capability at the press of a button. Topcon's exclusive “Plane Offset Program” is standard for all GPT products, and provides the most accurate method for prism-less location of building corners in the industry. This program computes a plane by measuring three (3) random points on a wall or other surface. A user can simply sight another point on the surface and instantly compute the desired point. With the “Topcon Plane Offset Program,” you can measure to the corner of buildings and structures precisely without the hassles of reflectorless measurement off the unwanted structures. (This Robot comes with satel radios, however we do not have the optional RC-2II units. We can sell them separately if your interested.)


  • Magnification: 30X
  • Image: Erect
  • Angle accuracy: 5”/1 mgon
  • Angle minimum display reading: 1”/5”
  • Distance measurement: 1Prism: 2.200m/7.200ft, 3Prism: 2.800m/9.200ft
  • Distance measurement precision: +/-(2mm + 2ppm)
  • Distance measuring time: 0.2s in tracking mode
  • Distance measuring time: 0.8s in coarse mode
  • Distance measuring time: 1.2s and 3s initial in fine mode
  • Distance minimum display: 1mm
  • Angle units: Switchable between meter or feet, angle degrees or gon
  • Display: Single, 2 side graphic LCD, Max. 40chr. X 10 lines
  • Data input/output: RS-232C compatible, asynchronous serial
  • Data recording: Memory card, holder
  • Servo driving mechanism: Servo control with slow down function
  • Servo coarse movement shuttle control outside: 7 speed change
  • Servo fine movement: Jog control Min. 1 sec.
  • Servo max. Rotating speed: 50deg/sec.
  • Servo Max. auto tracking speed: 12deg/sec.
  • Max. tracking range: 700m/2,300ft.
  • System memory: FEEPROM 512KB
  • Program memory: FEEPROM 1MB
  • Main memory: SDRM 640KB
  • Application program & data memory: FEEPROM 4MB
  • Compensator: Liquid dual axis
  • Compensating range/Accuracy: 4’/1”
  • Optical plummet: Erect 3x
  • Weight: 7.7 kg, 17 lbs including tribrach and battery


  • GPT-8205A robotic Total station
  • 360 deg. Prism
  • 2X Satelline Radios and Batteries
  • Topcon Tribrach
  • 2X BT-56Q battery with 2700mah capacity
  • Charger BC-27BR
  • 2x Original carrying cases
  • Owner’s manual

This unit will be cleaned and calibrated for 8 calibrations points (V&H collimation, Double centering, Optical Plummet, line of sight, plunge, tilt sensor, bubbles, cross hair) in our service department prior to shipping. All batteries will be checked to confirm that they have at least more than half-life otherwise will be re-celled.

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