Sub-inch, every flight.
Every measurement states the accuracy it was made to — ±1.2 cm horizontal, ±2.4 cm vertical — and every flight is checked against your own control marks before it is allowed onto the record. A quantity is never argued on somebody's assumption about the kit.
What it does
A measurement without a stated accuracy is an opinion with a decimal point on it. Every figure that leaves a flight carries the tolerance it was made to, so a quantity, a level or a clearance can be relied on by somebody who was not standing there — including a year later, in a room where it is being argued about.
You lay control once. After that, checkpoints on your own site are measured out of every finished flight and reported against tolerance, so accuracy is a number on the sheet rather than a claim in a brochure. Where a surveyor's mark governs, it governs — nothing here asks you to trust it instead.
In practice
- 01
Lay control once
Your surveyor sets the marks the site is going to be measured against, in the coordinate system the job already works in. That is the last time anybody stands in the middle of a live site holding a pole.
- 02
Every flight is checked against it
Independent checkpoints on your own site are read out of each finished flight and reported against tolerance — per flight, on the record, whether or not anyone asks.
- 03
Out of tolerance is flagged, not filed
A flight that misses does not quietly become a number in a claim. It is marked, and what would have rested on it waits until the site has been flown again.
Spec
- HORIZONTAL
- ±1.2 CM
- VERTICAL
- ±2.4 CM
- CHECKED
- EVERY FLIGHT
- OUT OF TOLERANCE
- FLAGGED, NOT FILED
±1.2 cm
Horizontal accuracy, checked every flight