 |
| |||
| filar voltmeter | |||
| string electrometer (gerader Faden); filament electrometer (gerader Faden); fibre electrometer (gerader Faden) | |||
| filament electrometer; string electrometer | |||
| thread electrometer | |||
|
Fadenelektrometer : 2 phrases, 1 sujets |
| Instruments de mesure | 2 |