| Answer | Crossword Clue |
|---|---|
| TACH | Speed measuring instrument (Abbr.) |
| RADAR | Speed-measuring device |
| SILLOMETER | Skipper's speed-measuring device |
| PITOT | ... tube, for measuring air speed. |
| MACH | Unit in measuring speed of sound. |
| MFLOPS | Units for measuring computer system speed |
| MACH | Number used in measuring the speed of sound |
