TABLE I.
Overview of the Properties of the Nine Resistance Standards Used in the Comparison. Here, α25 and β25 Are the Linear and Quadratic Temperature Coefficients at 25 °C, Respectively, and δ25 Is the Power Coefficient at 25 °C. The Manufacturers Are Leeds and Northrup (L&N), National Bureau of Standards (NBS; Now NIST), and Otto Wolff
| No | Nominal value [mΩ] |
Manufacturer | α25 [μΩ/Ω/K] |
β25 [μΩ/Ω/K2] |
δ25 [μΩ/Ω/W] |
|---|---|---|---|---|---|
| 1 | 100 | NBS | 3.3 | −0.53 | 6 |
| 2 | 100 | NBS | 0.9 | −0.53 | 5 |
| 3 | 10 | NBS | 4.9 | −0.55 | 2 |
| 4 | 10 | NBS | 5.1 | −0.55 | 5 |
| 5 | 1 | L&N | 3.9 | −0.51 | 2.5 |
| 6 | 1 | L&N | 1.6 | −0.49 | 2 |
| 7 | 0.1 | L&N | −5.7 | −0.43 | −2 |
| 8 | 0.1 | L&N | 10.4 | −0.35 | 24 |
| 9 | 0.1 | Otto Wolff | 3.6 | −0.49 | 2 |