[DaveinGermany]

Originally Posted by jaysay

when I asked what they were they said something like a shield, the bloody thing was only 3 inch x 4 inch

More like a dosimeter, it collects information which they can read off as to the radiation levels you've been exposed to. The Military had a watch like one the lads would wear in a nuclear environment & the RSM/2ic would take readings daily to assess exposure & survivability of the individual soldier.