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 "go" gauge for socket-outlets 2A, 5A, 15A, 30A.
B.S.546:1950 Fig.5-minimum "go" gauge for socket-outlets 2A, 5A, 15A, 30A.