| Answer | Crossword Clue |
|---|---|
| harmonographs | HARMONOGRAPH, an instrument for drawing curves representing vibrations |
| Answer | Crossword Clue |
|---|---|
| harmonographs | HARMONOGRAPH, an instrument for drawing curves representing vibrations |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.