The calculator is made of card and is 180mm [7″] in diameter. It was made for the Civil Defence Branch of the Food and Drug Administration. Date unknown. Maker unknown.
Filed under Calculators, Cold War Calculators
Tagged as calculators, cold war, effects of nuclear weapons, radiac, volvelle, wheel chart
I have one of these. Was it issued primarily for domestic use? If so, I can’t imagine that many people figured out how to use it! It certainly leaves me confused. Gonna hang onto it though….the Trump presidency is barely 2 months old, plenty of time yet for him to do something that might make it helpful to own a dosage calculator…..;-(
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