| Answer | Crossword Clue |
|---|---|
| RADAR | Navigation device used since the 1930's. |
| LORAN | Device used in navigation. |
| Answer | Crossword Clue |
|---|---|
| RADAR | Navigation device used since the 1930's. |
| LORAN | Device used in navigation. |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.