Original resistance decade box, designed as a multi-value resistance standard for precise adjustment of resistance in DC circuits, laboratory measurements, calibration, and metrology applications.
New old stock with manuals
It Is an instrumental resistance box used as a measure of electrical resistance in DC circuits, allowing precise setting of resistance values across a wide range.
The device consists of 6 decades of precision resistors connected in series, switched by rotary selectors to obtain accurate resistance values.
| Parameter | Value |
|---|---|
| Model | R33 |
| Type | Resistance Decade Box |
| Number of Decades | 6 |
| Resistance Range | 0.1 Ω to 99,999.9 Ω |
| Step Values | 0.1 / 1 / 10 / 100 / 1k / 10k Ω |
| Accuracy Class | 0.2 |
| Lowest Step | 0.1 Ω |
| Highest Step | 10,000 Ω |
| Nominal Power per Step | 0.25 W |
| Initial Resistance | ≤ 0.06 Ω |
| Thermal EMF | ≤ 10 µV |
| Operating Temperature | +10°C to +35°C |
| Dimensions | ~260 × 185 × 110 mm |
| Weight | ~2.5–3 kg |
✔ 0.1 Ω
✔ 1 Ω
✔ 10 Ω
✔ 100 Ω
✔ 1 kΩ
✔ 10 kΩ
Total max: 99,999.9 Ω
✔ High precision resistance setting (class 0.2)
✔ Fine resolution from 0.1 Ω
✔ Stable wire-wound resistors
✔ Low thermal EMF
✔ Reliable rotary switching system
✔ Classic Soviet metrology instrument
Temperature: +10 °C … +35 °C
Relative Humidity: ≤ 80 % at +25 °C
Designed for stable operation in standard laboratory environments.
Ships within 1–2 business days
Carefully packed to prevent damage
Worldwide shipping with tracking
Typical delivery time: 12–21 days (depends on destination)
Returns accepted only if the item is not as described.
Please contact the seller before returning.