At INRIM a DC Voltage precision resistive divider performing decade ratios from 10:1 to 10⁷:1 was built. It can be automatically calibrated with a top-class calibrator and a precision multimeter calibrated in terms of deviation from linearity. It is made up of 90 kΩ, 9 kΩ, 900 Ω, 90 Ω, 9 Ω, 0.9 Ω, 90 mΩ and 10 mΩ bulk metal foil resistors connected in series, in four-terminal configuration. Peculiarities of the calibration method of the divider are: the evaluation of the DMM input impedance to correct its readings minimizing the load error and a solution to reduce the emfs effect of the relays. These operations are made during the calibration of the divider. The calibration and use uncertainties of the divider span respectively from 6.1 × 10⁻⁷ to 5.9 × 10⁻⁴ and from 6.7 × 10⁻⁷ to 6.5 × 10⁻⁴. The project is transferable to secondary laboratories in the framework of the INRIM knowledge transfer task.

在 INRIM，构建了一个 DC 电压精密电阻分压器，其十进制比为 10:1 至 10 ⁷ :1。它可以使用顶级校准器和精密万用表自动校准，校准线性偏差。它由串联连接的 90 kΩ、9 kΩ、900 Ω、90 Ω、9 Ω、0.9 Ω、90 mΩ 和 10 mΩ 大块金属箔电阻器组成，采用四端子配置。分压器校准方法的特点是：评估 DMM 输入阻抗以校正其读数，最小化负载误差，以及减少继电器电动势效应的解决方案。这些操作是在分频器校准期间进行的。分频器的校准和使用不确定度分别为6.1 × 10 ^-7至5.9 × 10 ^-4并且从6.7×10 ^-7到6.5×10 ^-4。该项目可在 INRIM 知识转移任务的框架内转移到二级实验室。