Surveying Equipment - Glonass Base

We are offering topcon gps gr-3 rtk glonass base and rover.
the topcon gr-3 unit is rugged gps receiver uses 36 satellites to give you the geographical coordinates down to the last millimeter. It will also allow you to locate reference points with a high degree of precision.
the gps receiver is easy to hold due to the dual hot-swappable batteries. For balancing, the 2 batteries are oriented vertically to keep the center of gravity close to the range pole axis. The device is shock- proofed, so it can "easily" handle frontal cliff impacts (but don't try it on purpose, though). The main housing is is an i-beam shaped rugged magnesium, engineered to resist a fall from a range pole. It's weather proof too: the micro-tuned antenna, the switches and the connectors are housed under a plastic and rubber dome which overlaps the base and battery handle.
the gr-3 series following features:
915 mhhz spread spectrum internal tx/rx radio
advanced rugged system design
72 universal tracking channles
bluetooth wireless technology
g3 satellite tracking (gps, glonass, galileo)
optional internal gsm/gprs cellular communication
this sale includes:
1x gr3 base station
1x gr3 rover
4x batteries
2x antennas
1x tribrach
2x battery chargers
1x additional charging station
1x original carrying case
**** the batteries have been tested an hold a charge.