| Answer | Crossword Clue |
|---|---|
| OROMETER | Instrument for measuring mountain altitudes. |
| CALIPER | Instrument for measuring diameters. |
| PROTRACTOR | Instrument for measuring angles. |
| OOMETER | Instrument for measuring eggs. |
| AMMETER | Instrument for measuring electric current. |
| ODOMETER | Instrument for measuring distance traveled |
| RHEOMETER | Instrument for measuring velocity of flow. |
| PALATOMETER | Instrument for measuring movements of the velum. |
| AEROMETRE | Instrument for measuring density of air or gases: French spelling. |
