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Amgueddfa Cymru
Control panel for the decoiling line at The Metal Box Company Ltd factory, Neath. Photographer's stamp on the back.
The mirror in the photograph was for the operator to see any imperfections in the coil strip as it passed by, he could then trigger a gate further down the line to reject that portion of the coil, there was also a thickness gauge using a Strontium 90 isotope to accurately measure the moving coil to a extremely accurate degree.