| Answer | Crossword Clue |
|---|---|
| ergographs | ERGOGRAPH, an instrument for measuring and recording muscular work |
| ergograph | an instrument for measuring and recording muscular work |
| ergograph | An instrument for measuring and recording the work done by a particular muscle group |
| ergographs | An instrument for measuring and recording the work done by a particular muscle group |
| pneumograph | an instrument for measuring and recording respiration |
| pneumographs | PNEUMOGRAPH, an instrument for measuring and recording respiration |
| 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 |
| 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 |
