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Just enjoying lockdown by restoring an old GPO clock relay unit. I need to take a little care as apparently, GPOtelephones@... cloth cables were doped with arsenic to stop rats chewing them! Although designed in 1936, this unit is dated as 1951 being built at the GPO factory, Birmingham. Lovely bit of quality wiring. Simon GPO Clocks -- Simon GPO Clocks http://www.lightstraw.co.uk/gpo/clocksystems/index.html
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