| Rating | Solver | Clue |
|---|---|---|
| CYCLES | Rotations | |
| COUPLE | Two rotations, movements, etc., which are equal in amount but opposite in direction, and acting along parallel lines or around parallel axes. | |
| OPERAMETER | An instrument or machine for measuring work done, especially for ascertaining the number of rotations made by a machine or wheel in manufacturing cloth; a counter. | |
| TACHOMETER | ...ng water in a river or canal, consisting of a wheel with inclined vanes, which is turned by the current. The rotations of the wheel are recorded... | |
| GYROSCOPE | ... illustrating the dynamics of rotating bodies, the composition of rotations, etc. It was devised by Professor W. R. Johnson, in 1832, by whom... | |