| Answer | Crossword Clue |
|---|---|
| dipleidoscope | an instrument for ascertaining the moment of meridian passage by observing the coincidence of two images |
| Answer | Crossword Clue |
|---|---|
| dipleidoscope | an instrument for ascertaining the moment of meridian passage by observing the coincidence of two images |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.