DC Microvolt-Amperemeter 425A (425 A)
ID = 109139
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Hewlett-Packard, HP;: DC Microvolt-Amperemeter 425A [Equipment] ID = 270382 400x394
| Country: United States of America (USA) | Manufacturer/Brand: Hewlett-Packard, (HP); Palo Alto, CA |
| Year: 1960 ?? | Type: Service- or Lab Equipment |
| Valves / Tubes | 4: 5751 12AX7 12AT7 6X4 0B2 0A2 |
|---|---|
| Transistors | 2: |
| Principle | not available |
|---|---|
| Wave bands | - without |
| Power type and voltage | Alternating Current supply (AC) / 115/230 Volt |
| Loudspeaker/pwr.out | - For headphones or amp. |
| from Radiomuseum.org | Model: DC Microvolt-Amperemeter 425A |
| Material | Metal case |
| Shape | Tablemodel, high profile (upright - NOT Cathedral nor Tombstone). |
| Dimensions (WHD) | 180 x 255 x 275 mm / 7.1 x 10 x 10.8 inch |
| Notes | Messbereiche: Microvolt: 10/30/100; Millivolt: 0.3/1/3/10/30; Volt: 0.1/0.3/1; Micro-Microamperes: 10/30/100; Milli-Microamperes: 0.3/1/3/10/30; Microamperes: 0.1/0.3/1; Milliamperes: 0.003/.01/.03/.1/.3/1/3 Spiegelskala mit 0-Punkt in der Mitte. |
This model was suggested by Richard Gajics.
All listed radios etc. from Hewlett-Packard, (HP); Palo Alto, CA
Here you find 155 models, 120 with images and 48 with schematics.
Collection of Thomas Eigenseher (D)
Collection of Klaus Ortwein (D)
Collection of Richard Gajics (A)
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