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We welcome trade-ins and offer competitive rates for your used gear - email or call for more information!

Trimble Robotic SystemTrimble Robotic System

We have excellent financing available on all new and used equipment OAC. Please contact us for details.

We stand behind what we sell

Carlson CR2 w/ Mini2, Surveyor2, and Supervisor TabletCarlson CR2 w/ Mini2, Surveyor2, and Supervisor Tablet

(unless it's a robot - then we stand at the pole!)

 US Survey Supply is an Authorized Dealer of:

Carlson Software


Dutch Hill


SubSurface Instruments


Carlson SurvCE

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In addition to new products we always have a variety of used instruments available. The images above don't necessarily reflect current inventory; call us to find out what's here now.


Zenith25 Pro GNSS Receiver

With an internal radio and 3.75 G Pentaband GSM, the full support of GPS, GLONASS, Galileo, BeiDou and SBAS systems the Zenith25 Pro Series is truly future proof. Combining all those technologies with Q-Lock™, the Zenith25                                                        Pro is suitable for any application.

Zenith25 Pro receivers are built to last and are tough enough to withstand a 2m drop onto a hard surface and total submersion in water.

Extremely Rugged

  • IP68 Dust and Waterproof
  • Withstands a 2 m Drop
  • Vibration Resistant

Future Proof

  • Quad-/Penta Band GSM/GPRS/UMTS
  • UHF Radio and Bluetooth®
  • True GNSS: GPS, GLONASS, BeiDou, Galileo & SBAS

Versatile Handheld

  • Camera, Compass, Altimeter
  • Meets Military Standards
  • Optimized for GeoMax

* Call us @ 866-USSURVEY for best pricing!

** Not all configurations are necessarily in stock; please allow up to two weeks for delivery and as always, if you have questions we welcome your call or email.


AdVance® technology: High fix     availability + reliability

Max. No. of satellites: 60 satellites simultaneously

Channels: 120, dual frequency

GPS tracking: L1, L2, L2C

GLONASS tracking: L1, L 2

BeiDou tracking: B1, B2

Galileo tracking: Supported*

Positioning rate: 20 Hz, 5 Hz



Static horizontal: 5 mm ± 0.5 ppm (rms)

Static vertical: 10 mm ± 0.5 ppm (rms)


Static long horiz.:3 mm ± 0.1 ppm (rms)


Static long vert.: 3.5 mm ± 0.4 ppm (rms)


Kinematic horiz.: 10 mm ± 1 ppm (rms)

Kinematic vertical: 20 mm ± 1 ppm (rms)


Selectable: ExtraSafe, Standard


Keyboard: On/off and function keys

LED status indicators: Position, battery, Bluetooth®, RTK receive, RTK transmit, storage card

LED mode indicators: Rover, base, static

Data recording: MicroSD card

GSM/ TCP/IP: Removable SIM card


GSM/GPRS module: Quad-Band GSM & Penta-Band UMTS 800 /850 /900 /1900 /2100 MHz

UHF radio module: 1000 mW transceiver, 406 – 480 MHz

Bluetooth®: Device class II

TNC connector: UHF antenna

Communication port: USB, serial & power


Internal battery: Removable 2.6 Ah / 7.4 V

Operating time: 9h in static / 6h in rover mode

External power: 10.5 V to 28 V


Dimensions: Height 95 mm, ø 198 mm

Weight: 1.2 kg incl. battery &  UHF radio

Operating temp.: –40°C to 65°C

Protection class: IP68 dust and waterproof

Humidity: 100%, condensing

Vibration: Mechanical stress    resistant according ISO       9022-36-05

Shock: Withstands 2 m drop onto  hard surface

* The optional Galileo tracking will be made available once there
are sufficient satellites.
** Measurement accuracy and reliability are dependent on various factors
including satellite, geometry, obstructions, observation time, ionospheric
conditions, multipath, etc. Figures quoted assume normal to favorable