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BS546:1950 | Plugs Gauges B.S.546:1950 Fig.2-withdrawal-pull gauge for effectiveness of contacts 2A, 5A, 15A, 30A. B.S.546:1950 Fig.3-"go" gauge for plug 2A, 5A, 15A, 30A. B.S.546:1950 Fig.4-maximum ...