Shanghai Shenggao Electric Technology Co., Ltd. produces and sellsSHSG90Standard resistancefrom9 a1/2WComposed of high-precision military grade wire wound resistor series, it is convenient to calibrate instruments by directly shifting gears without changing wires, with high precision up to0.05%The standard resistor specially customized for our company has good long-term stability, and its resistance value includes1mOh.10mOh.100mOh.1Oh.10Oh.100Oh.1KOh.10KOh.100KOh, *31 According to the "Management Measures for Qualification of Lightning Protection Device Testing" in the order10^-3~10⁵ Range. Mainly used for calibration of grounding resistance testers, equipotential testers, and other instruments.