
Dosimeters - which can range from the size of a pen to the size of a person's palm - are typically used to measure a person's exposure to radiation. They cost between $400 and $600, with most small enough to be either worn or carried in pockets. They are different from Geiger counters, which measure airborne radiation and cost thousands of dollars.
A Geiger counter is about the size of a brick and is used to measure larger areas. Sales of Geiger counters at QT Instruments have also increased, with up to five counters ordered every day.
ORIGINAL SOURCE
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