Quality & method
How we make sure the numbers are right
If we can't meet your accuracy with the instrument named, we tell you before you buy.
Accuracy
| Scans and models | Checked against separate reference points that were not used to build the model. Reported as average error (RMSE), following the ASPRS mapping accuracy standard, Edition 2. |
|---|---|
| Parts | Every feature checked against its drawing tolerance (ASME Y14.5), with how precise each measurement is. |
| Every report lists | The instrument, its calibration status, site conditions and who measured. |
Condition scoring
Each item we monitor gets one number: how much of its allowed limit it has used. The margin of error is shown next to it. The verdict is within limit, over limit, or re-measure when the margin of error crosses the limit.
| Example (illustration) | Value |
|---|---|
| Item | Floor flatness |
| Allowed limit | 15 mm |
| Measured | 9.6 mm ± 1.2 mm |
| Limit used | 64% ± 8% |
| Verdict | Within limit |
± figures are stated at about 95% confidence. Scoring follows Real Reveal's own method, written up as a draft standard.
Equipment
| Laser scanning | Leica BLK360 G2 terrestrial laser scanner |
|---|---|
| Drones | Flown by HISS. Each quote names the aircraft. Drones from manufacturers barred by federal rules are not used on federal work. |
| Part inspection | On your coordinate measuring machine or at an agreed facility. The machine and its calibration are named in the report. |
Testing our methods
Before we use a new analysis method on your data, we test it on practice scenes with known defects. We write down the right answers first and check them only after our results are final. The results, misses included, are on file.
Data and records
| Formats | Standard 3D, CAD and map files: E57, LAS, OBJ, 3D Tiles, GeoTIFF, DWG and PDF, or as agreed |
|---|---|
| Delivery | Secure download link, or physical media on request |
| Records | Each job keeps a list of delivered files with a digital fingerprint (checksum), plus who captured and processed the data |
Safety on site
| Every job | A site-specific safety briefing |
|---|---|
| Army Corps of Engineers sites | A written accident prevention plan per EM 385-1-1 |
| Facility rules | Badging, escort and photography rules followed as each facility requires |
| Drone flights | Flown by FAA-licensed pilots; airspace approval obtained before every flight |