6 PCS Drone Survey Ground Control Point GCP, UAV Marker for Mapping & Surveying, GCP Survey with Center Pass Through, Visible from 400 Feet, Compatible with Most Surveying Equipment Software, 24 X 24
| Country | USA |
| Manufacturer | Tor Books |
| Binding | Kindle Edition |
| ReleaseDate | 2023-05-16 |
| Format | Kindle eBook |