This group of electrical and electronic standards is disseminating the traceability for measurement of capacitance, inductance and ac resistance at low and high frequency to calibration laboratories and R & D organizations. The traceability starts from primary standards of capacitance, Calculable Cross Capacitance, based on Lampard- Thompson theorem and traceable to base unit length. The unit of resistance, Ohm, is also realized from capacitance using Quadrature Bridge and other precision ac bridges.