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VINTAGE CHATHAM GEIGER COUNTER RADIATION DETECTOR MODEL NO CH-720 CIVIL DEFENCE, US $930 – Picture 0
VINTAGE CHATHAM GEIGER COUNTER RADIATION DETECTOR MODEL NO CH-720 CIVIL DEFENCE, US $930 – Picture 0

Vintage Chatham Geiger Counter Radiation Detector Model No Ch-720 Civil Defence

US $930

  • Perrysburg, Ohio, United States
  • Jun 4th
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 Cool old Steam Punk Geiger counter from the 50's. Last calibrated in 1961. Nice civil defense decal on the side partially covered by calibration sticker.  I have no idea how or if this thing works. Selling as is, project piece. Shows plenty of wear. Would be great as a movie or play prop. Please use pictures to evaluate. Here's a bit of information I got from Wikipedia. "This is a survey meter with a twist. Similar to the CDV-715, the CDV-720 is a fixed-position ionization chamber survey meter. Unlike any other survey meter, however, this unit has a movable beta shield on the bottom of the unit for detecting high levels of beta radiation. When slid to the open position, beta particles are allowed to directly penetrate the ionization chamber. With the beta shield closed, only gammas can penetrate both the shield and ionization chamber. This meter reads from 1R/hr to 500R/hr (X1, X10, and X100 scales)."

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