| Answer | Crossword Clue |
|---|---|
| OCTANTS | Altitude measuring instruments |
| ALPENHORNS | High altitude instruments? |
| CALIPERS | Measuring instruments |
| GAUGES | Measuring instruments |
| METERS | Measuring instruments |
| METERS | Measuring instruments. |
| AMMETERS | Current-measuring instruments |
| DUROMETERS | Instruments for measuring hardness. |
| PYROMETERS | Instruments measuring high temperatures. |
| CALIPERS | Two-legged measuring instruments |
| MICROMANOMETERS | Instruments for measuring minute differences in pressure |
