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Amgueddfa Cymru – Museum Wales
An 8-page booklets, on off-white paper, with black printed text. Full title: 'Electricity Supply Act, 1936. Explanatory Memorandum concerning the Testing of electricity meters; the Apparatus approved for use in Meter Testing Stations; and the procedure contemplated by the Electricity Commissioners in connection with the Certification of electricity meters under the Electricity Supply (Meters) Act, 1936.' Loose (with other bills, acts etc.) inside a black hardback leather file.
