| Answer | Crossword Clue |
|---|---|
| microbarograph | an instrument for recording minute changes in atmospheric pressure |
| microbarographs | MICROBAROGRAPH, an instrument for recording minute changes in atmospheric pressure |
| statoscope | an instrument for measuring small changes in atmospheric pressure |
| statoscopes | STATOSCOPE, an instrument for measuring small changes in atmospheric pressure |
| plethysmographs | An instrument for recording and measuring variation in the volume of a part of the body, esp. as caused by changes in blood pressure |
| plethysmograph | An instrument for recording and measuring variation in the volume of a part of the body, esp. as caused by changes in blood pressure |
