| Answer | Crossword Clue |
|---|---|
| LODESTARS | Navigational reference points |
| vor | radio navigational aid in which stations emit distinctive signals on each of 360 degrees, giving the bearing of each degree with reference to magnetic north |
| BENCHMARKS | Reference points. |
| DATUMS | Topographers' reference points |
| BENCHMARKS | Points of reference, for surveyors. |
