Topcon GPT 3505 LNW 5 Second Reflectorless Total Station 710167121


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Overview for the Topcon GPT 3505 LNW 5 Second Reflectorless Total Station

With 5 arc second accuracy, the Topcon GPT 3505 LNW Total Station measures distances up to 6,560 feet in reflectorless mode and up to 9,842 feet when paired with a prism. This surveying instrument is integrated with Topcon’s advanced time-of-flight technology that reduces the noise associated with non-prism measurements providing a highly accurate result to most surfaces. The GPT-3500 series features a laser pointer for assisting the rodman, guide lights for stakeout, and Class I safe EDM laser for maximum safety.

What’s in the Box

Topcon GPT 3505 LNW 5 Second Reflectorless Total Station 710167121
Hard carrying case
Carrying strap
Lens cap
Lens hood
Lens brush
Tool pouch
Adjusting pin (2)
Cleaning cloth
Power cable
Rechargeable battery
Battery charger
User manual
2-year manufacturer’s warranty


Specifications for the Topcon GPT 3505 LNW 5 Second Reflectorless Total Station

Weight 10.8 lbs (4.9 kg)
Warranty 2-year
Protection Class IP66 (dust proof and powerful water jets and heavy seas resistant)
Tripod Thread 5/8 x 11 in.
Internal Memory 24,000 points
Software On-board
Guide Light Red LED
Angle Measurement
Minimum Reading 0.5-second/1 second
Accuracy 5-second
Distance Measurement
Unit of Measure (distance display) m/ft/in.
EDM Accuracy (Precision) ±(2mm + 2ppm x D) for prism; ±(10mm + 10ppm x D) for long reflectorless
Minimum Reading 2,000 m (6,560 ft)
Tilt Sensor/Compensator
Range ± 3
Type Dual axis liquid
Power Source Rechargeable Li-ion battery
Battery Life 9 hours
Battery Life Alert yes
Magnification 30x
Field of View 1 degree 30 arcmin
Resolving Power 3 arcsec
Reflectorless yes
Display and Keypad
Type Graphic LCD
Sides Dual
Keys Alphanumeric
Operating -4Fº~122ºF (-20ºC~50ºC)
Surveying and Construction yes
Mapping and GIS (geographic information systems) yes
Utilities yes
Environment Studies yes
Geomarking yes
Archaeology yes
Accident Reconstruction yes
Measurement Range (under fair weather conditions)
Single Prism 3,000 m (9,840 ft)
No Prism 2,000 m (6,560 ft)
Coordinate Measurement Point yes
Angle and Distance Stake Out yes
Stake Out Line yes
Offsets yes
Missing Line yes
Remote Elevation yes
Resection yes
Area Calculation yes
Laser Pointer
Class Class 1 (for distance measurement); Class 2 (Laser Pointer on)
Bluetooth Class 2
Pin Port RS-232C


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