» Resistance case for four-range voltmeter (0201)
Immagini
DESCRIPTION
Exhibit 201 is a resistance box for a voltmeter with ranges from 30 to 300 V. It is not the usual resistance box with keys to remove to insert the corresponding resistance but with five terminals for inserting the four corresponding resistances for obtaining full scale ranges of 30, 75, 150, 300 Volts. The holes in the front and back of the case are intended for ventilation and are covered with a thin brass net.
Dati Catalografici
| Data di costruzione: | --- |
|---|---|
| Data di carico: | 1920-06-01 |
| Nr. Inventario: | 3831 (Generale dal 1874) |
| Costruttore: | Sconosciuto |
| Materiale: | ottone, legno, metallo |
| Dimensioni: | 23 cm x 19 cm x 10 cm |
| Conservazione: | ottimo |