Please read the Reach RS4 product description first. Everything there is also applicable to Reach RS4 Pro. In this doc, we will focus on the possibilities that the dual camera brings.
The Reach RS4 Pro is Emlid’s most advanced GNSS receiver, built on the RS4 platform and enhanced with dual Full HD cameras. Combining centimetre-level RTK accuracy with AR-guided stakeout and image-based measurement, the RS4 Pro enables faster, safer, and more versatile field operations. It is the perfect device for anyone looking for the latest technology.
AR stakeout
Designs are overlaid directly onto the real-world view. First, you see the landscape, and as you get closer to the points, the view switches to the bottom camera with a bullseye.
Visual capture
You can record a video of a specific area and then obtain the coordinates of points directly from the pictures.
Problem we solve
Confusing map navigation
Traditional stakeout requires interpreting abstract coordinates on a 2D map. On busy construction sites with a huge amount of points, this slows crews down and increases the chance of mistakes.
Inaccessible points
Many points are physically unreachable with a GNSS pole: across roads, behind fences, on facades, over water, above pits, or near machinery.
Safety
Hazardous environments expose crews to unnecessary risk — entering trenches, working in traffic, or navigating industrial zones just to collect a point.
Losing time on switching between instruments
Surveyors often need to bring in total stations or additional equipment to survey inaccessible points. Switching from GNSS to a total station or other imaging equipment mid-project wastes time, complicates workflows, and requires extra training.
How we solve it
Stakeout with AR
RS4 Pro overlays CAD designs directly onto the real-world view. Crews no longer “follow the map” — they see exactly where to place stakes
Visual capture
This solves several problems at once: you no longer need a total station, you don’t need to go to hazardous areas, and you still have the coordinates of inaccessible points.