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Old 21st Nov 2022, 4:59 pm   #5
Jon_G4MDC
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Join Date: Nov 2015
Location: Welwyn Garden City, Hertfordshire, UK.
Posts: 2,015
Default Re: Contamination Meter No. 1 no reading

Find a Big Ben by Westclox from the 1960's.

My physics master was horrified by one. It would glow all night long and bright enough you could read by it.
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