I bought a $20 laser rangefinder. My, it does it make things easier!
| Laser | UWB |
| 17 | 0 |
| 75 | 53 |
| 70 | 67 |
| 137 | 119 |
| 198 | 170 |
| 282 | 260 |
| 358 | 341 |
| 428 | 412 |
| 489 | 474 |
| 548 | 520 |
| 607 | 587 |
| 664 | 641 |
| 751 | 756 |
| 821 | 802 |
| 888 | 907 |
| 968 | 978 |
| 1056 | 1036 |
| 1115 | 1180 |
| 1267 | 1248 |
The laser gets confused below about 50cms. The UWB seems to under-read by about 25cms.