Internal GPS Is Inaccurate. Does This Mean I Need To Buy External GNSS For vGIS To Work? (KB-FQ003)

No. vGIS has two calibration methods: 

1. vGIS Calibration: Achieves 5cm/2in accuracy when configured correctly.
2. External GNSS/RTK-supported calibration: Up to 1cm horizontal accuracy. Both have their own advantages and use cases. Most of our clients—over 95% of users—use vGIS as is without additional GNSS hardware, which helps them minimize or completely eliminate hardware costs.

To read more about both calibration methods, click here.