TOPCON GT-505 Robotic Total Station

New TOPCON GT-505 5” Angle Accuracy Robotic Total Station FC-5000 Magnet Hybrid Software, come with three-year instrument and five-year motor warranty


As a robotic total station and one-man surveying solution, the system features a waterproof design, TSshield™ advanced security, LongLink™ communications, and RC-5 with a quick lock function. The GT series can be paired with a FC-5000 tablet computer or FC-500 to provide full cloud connectivity.

  • UltraSonic Direct Drive motors – fastest robotic total station in the world.
  • 30% smaller and lighter than any Topcon robotic instrument with more functionality
  • TSshield™ global service
  • Advanced UltraTrac technology
  • Three-year instrument and five-year motor warranty
  • Available in two models: GT-500 and GT-1000

Included In the Sale:

Topcon GT-505 Spesification

LCD Color touchscreen 4.3 inch TFT 800 x 480 WVGA display
Backlight LED 9 brightness levels
Touch panel resistance sensitive analog type
Operating system
Operting System (OS) Windows Compact 7

Operation panel (keyboard)

Keys 24 keys (soft function, operations, power on, light) with illuminator and trigger key
Auto power-off 5 levels (selectable)
Laser sighting function Provided On/Off (selectable)

Sensitivity of levels

Circular level 10’/2 mm on tribrach
8’/2 mm on main unit (optional)
Electronic circular levels Graphic display range: 6’ (inner circle)
Digital display range: ± 6’ 30”

Optical plummet

Image Erect
Magnification 3x
Minimum focus 0.5 m

Minimum display

Fine/Rapid measurement 0.001 m (0.01 ft. / 1/8 inch)
Tracking measurement 0.01 m (0.1 ft. / 1/2 inch)
Maximum slope prism/reflective sheet 12,000 m
Distance display Reflectorless: 1,200 m
Prism: 9,600 m
Distance unit m/ft/US ft/inch (selectable)

Distance accuracy

Using prism 360 ATP1 Fine: ± (1 + 2 ppm x D) mm
Rapid: ± (5 + 2 ppm x D) mm
Using reflective sheet target Fine: ± (2 + 2 ppm x D) mm
Rapid: ± (5 + 2 ppm x D) mm
Reflectorless (White)
  • Fine:
    ± (2 + 2 ppm x D) mm (0.3 to 200 m)
    ± (5 + 10 ppm x D) mm (over 200 to 350 m)
    ± (10 + 10 ppm x D) mm (over 350 to 1,000 m)
  • Rapid:
    ± (6 + 2 ppm x D) mm (0.3 to 200 m)
    ± (8 + 10 ppm x D) mm (over 200 to 350 m)
    ± (15 + 10 ppm x D) mm (over 350 to 1,000 m)
Measurement mode Fine measurement (single/repeat/average)
Rapid measurement (single/repeat)/Tracking (selectable)

Measuring time

Fine measurement 1.5 sec + every 0.9 sec.
Rapid measurement 1.3 sec + every 0.6 sec.
Tracking measurement 1.3 sec + every 0.4 sec.
Temperature input range - 35 to 60°C (in 0.1°C step)/- 22 to 140°F (in 1°F step)
Pressure input range 500 to 1,400 hPa (in 0.1 hPa step),
375 to 1,050 mm Hg (in 0.1 mm Hg step),
14.8 to 41.3 inch Hg (in 0.01 inch Hg step)
ppm input range -499 to 499 ppm (in 0.1 ppm step)
Prism constant correction -99 to 99 mm (in 0.1 mm step) 0 mm fixed for reflectorless measurement
Earth curvature and refraction correction No/Yes K=0.142
Yes K=0.20 (selectable)
Sea level correction No/Yes (selectable)


Max revolving speed (turning) 120 degrees per second
Max auto tracking speed 18 degrees per second

Auto collimating tracking range

1 prism (AP01) 1.3 to 800 m
360 degree prism (ATP1) 2 to 600 m
Pin pole prism type 5 1.3 to 600 m
Pin pole prism with OR1PA 1.3 to 500 m
Compact prism CP01 1.3 to 700 m

Collimating accuracy

Standing still at 100 m or less 1.2 mm or better
Standing still greater then 100 m (0.3 + 9 ppm x D) mm

Guide light

Light source LED (red 626 nm/green 524 nm)
Distance 1.3 to 150 m
Visible range Right and Left/Upward and Downward: ± 4° (7 m/100 m)
Resolving power at center area (width) 4’ (about 0.12 m/100 m)
Brightness 3 levels (bright/normal/dim)

Memory and Data

Internal memory 1GB
External memory USB flash memory (up to 32GB)
Data transfer
  • Data input/output asynchronous serial
  • RS232C compatible
  • USB USB Revision 2.0 (FS)
  • Host (Type A)
  • Client (Type miniB)

Bluetooth® wireless technology

Transmission method FHSS
Modulation GFSK (Gaussian-filtered frequency shift keying)
Frequency band 2.402 to 2.48 GHz
Bluetooth® profile SPP, DUN
Power class Class 1
Range 600 m (No obstacles, few vehicles or sources of radio omissions/interference in the near vicinity of the instrument, no rain, while in communication with RC-5A)
Authentication Yes/No (selectable)


Communication distance 10 m
Access method Infrastructure mode/ad hoc mode
Frequency range 2,412 to 2,472 MHz (1 to 11ch)
Transmission specification IEEE802.11g/b/n

Telematics systems

Cellular 2G/3G
GNSS GPS L1 for positioning
User SIM mini SIM(2FF) (25 x 15 x 0.76 mm)
* Do not use SIM card converter/adaptor

Power supply

Power source Rechargeable Li-ion battery BDC70
Working duration at 20°C BDC70: approx. 4 hours
BT73Q (external optional) approx. 6.5 hours
Battery state indicator 4 levels
Auto power-off 5 levels (5/10/15/30 min/Not set) (selectable)
External power source 6.7 to 12 V
Charging time at 25°C approx. 5.5 hours (using CDC68)

Battery (BDC70) Charging can take more than 2.5 hours when temperatures are either especially high or low.

Nominal voltage 7.2 V
Capacity 5,240 mAh
Dimensions (W x D x H) 38 x 70 x 40 mm
Weight approx. 195 g

Charger (CDC68)

Voltage AC100 to 240 V
Charging time per battery (at 25°C) BDC70: approx. 5.5 hours (Charging can take longer than the times stated above when temperatures are either especially high or low.)
Charging temperature range 0 to 40°C
Storage temperature range -20 to 65°C
Size (W x D x H) 94 x 102 x 36 mm
Weight about 170 g
Operating temperature Standard models: -20 to 50°C (-4 to 122°F) (no condensation)
Storage temperature -30 to 60°C (-22 to 140°F) (no condensation)
Dust/Water rating IP65
Instrument height 192 mm from tribrach mounting surface
236 mm from tribrach bottom
Size with handle (W x D x H) 212 x 172 x 355 mm
Weight 5.8 kg (with handle/battery)
Certifications and Standards
  • USA FCC Class A
  • Europe R&TTE-Class 1
  • Europe EMC-Class B
  • Canada ICES –Class A
  • Australia C-Tick N 13813
  • Europe WEEE Directive
  • Europe Battery Directive
  • California Proposition 65
  • California Perchlorate Material CR

UltraSonic technology is the driving force for the GT Series. The UltraSonic motors are the thinnest, lightest, and the fastest on the market – providing you with the smoothest, fastest and most accurate prism-tracking possible. It’s a difference you can see and hear immediately. With a turning speed of 180° per-second, no matter how fast you move, or how many obstacles are in the way, you cannot outrun the GT.

Our new UltraTrac technology gives you increased prism-tracking strength in all conditions. Advanced instrument algorithms deliver the confidence you need to move ahead. It’s not that you lose line-of-sight, it’s how fast you can reacquire and get back to work.

Ultra-slim and reliable
Featuring a remarkably slimmed down design, the compact system is a third smaller and lighter than any Topcon robotic instrument, yet twice as fast. Without traditional gears or wearing parts, the UltraSonic motors are more rugged and durable – lasting four times longer than previous total stations, and we back it with a five-year warranty.

Workdays turned into workflows

  • Direct connectivity to both MAGNET® Enterprise and Sitelink3D global web services
  • Easy collaboration from project sites to office staff and managers
  • Instant file sharing with both Autodesk® AutoCAD Civil 3D and Bentley MicroStation


Integrated cellular modem
  • Instant Internet connection from project site
  • MAGNET® Field on-board for team collaboration
  • Asset management through MAGNET® Enterprise service
Sharp display
  • Larger and brighter color touch screen
  • User-friendly interface with simple setup routines and hot keys
  • Faster processor for improved response time
Versatile solution
  • Hybrid Positioning™ with quick addition of HiPer SR receiver
  • Compatible with RC-5 remote
  • Reflectorless out to 1,000 m
Guaranteed reliability
  • 3-year instrument warranty
  • 5-year UltraSonic motor warranty
  • TSshield™ for worry-free theft deterrence and firmware maintenance