| Manometer | manometer pressure gauge |
| Nanometer | nanometre nanometer |
| Ionometer | ionometer |
| Barometer | barometer |
| Gasometer | gasholder gasometer |
| Machmeter | Machmeter |
| Manchester | Manchester |
| Manöver | manoeuvre maneuver |
| Klinometer | clinometer |
| Luminometer | photometer |
| Hodometer | odometer |
| Odometer | odometer |
| Picometer | picometer |
| Tachometer | speedometer |
| Algometer | algometer |
| Anemometer | anemometer |
| Aräometer | areometer |
| Attometer | attometer attometre |
| Ergometer | ergometer |
| Geometer | surveyor |