No.12068 An instrument for showing at any moment the speed of a revolving shaft, consisting of a delicate revolving conical pendulum which is driven by the shaft, and the action of which by change of speed moves a pointer which indicates the speed on a graduated dial.
⭕️
❌
💾
| 🖊 | ☑️ |
| ⭕️ | [[ AnswerCalc[0] ]] % | A | [[ AnswerCalc[1] ]] |
|
|
|
|
|
|
|
|
💾
✔️
| [[ d.CommentTxt ]] |
| < | > |
| 🥇 |