Model unit A, B, C, D, E, F, G SF-52: 58, 66.5, 4.5, 26, 40. ... .5, 4.5 Model unit A, B, C, D, E, F, G SF-52: 58, 66.5, 4.5, 26, 40 ... distribution, the controlpanel of power plant and the different apparatus to measure the DC current,voltage AC current, voltage, frequency, power and ... and the other non-electric value. SF-62T2 Round Panel Meter