| Answer | Crossword Clue |
|---|---|
| torsiograph | an instrument for recording torsional vibrations on an object |
| torsiographs | TORSIOGRAPH, an instrument for recording torsional vibrations on an object |
| camerae | device that consists of a lightproof chamber with an aperture fitted with a lens and a shutter through which the image of an object is projected onto a surface for recording (as on film) or for translation into electrical impulses (as for television broadcast) |
| vibrograph | an instrument for recording vibrations |
| phonautograph | an instrument for recording sound vibrations |
| vibrographs | VIBROGRAPH, an instrument for recording vibrations |
| phonautographs | PHONAUTOGRAPH, an instrument for recording sound vibrations |
| phonautographic | relating to a phonautograph, an instrument for recording sound vibrations |
