 |
| |||
| filament electrometer; string electrometer | |||
| filar voltmeter | |||
| thread electrometer | |||
| string electrometer (gerader Faden); filament electrometer (gerader Faden); fibre electrometer (gerader Faden) | |||
|
Fadenelektrometer : 2 do fraz, 1 tematyki |
| Urządzenia pomiarowe | 2 |