I’m looking to use the DJI M300 RTK in conjunction with Pix4Dmapper to take accurate measurements at different sites. For example, maybe measuring the distance from the edge of a rooftop to some equipment. I was curious about what I can do to increase the accuracy of these measurements as much as possible. Like if the distance I measure with a measuring tape is 2ft, what can I do to get pix4dmapper to measure as close to 2ft as possible? I will note that many sites are completely inaccessible, and requires flying hundreds to thousands of feet away, so placing any GCPs or scale constraints on the site itself would be basically impossible. Would the RTK functionality of the drone help with this? And if so, is the network one sufficient or would a D-RTK 2 ground station be most recommended?