ガイガーカウンターになる時計　東日本震災のころ仕入れて売った思い出の品だ

https://www.ebay.ca/itm/PM1208M-Gamma-Radiation-Detector-Watch-Dosimeter-Geiger-Calibrate-by-POLIMASTER/232246619024?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D20180124145912%26meid%3D709f903bf2a4446c982d2da98490acfd%26pid%3D100005%26rk%3D1%