| Answer | Crossword Clue |
|---|---|
| ETALON | Distance-measuring instrument |
| ETALON | Standard: Fr. |
| ETALON | An interferometer. |
| ETALON | Interferometer |
| Answer | Crossword Clue |
|---|---|
| ETALON | Distance-measuring instrument |
| ETALON | Standard: Fr. |
| ETALON | An interferometer. |
| ETALON | Interferometer |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.