[Jewelry making - Article 00849] - Re: [Orchid] Very important new JVC findings

[Bruce Holmgrain]

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    If anyone is in the market for a radiation counter, Geiger counters
    from the cold war are available on Ebay for about $40. Be sure, you
    only purchase a CDV 700 to detect radiation. It is a Geiger counter
    The CDV 777 an a few other models are survey meters and will only
    detect very hot items. The CDV 777 is also often misrepresented on
    Ebay. Also know, the CDV 700 was made about a half century ago and
    though has been well preserved may not be very reliable and has
    almost certainly not been calibrated. With those caveats, one can
    have a relatively fun time checking out things like old watch and
    clock faces. 

    <edit> Additional comments by the Author: </edit> 

    The CDV 777 is  kit that  includes a CDV 715 survey meter and
    dosimeters and a charger for the dosimeters.  It may nor may not
    contain a CDV 700 which really is a Geiger counter. The CDV 700 is
    available sans paperweights. 

Bruce D. Holmgrain
JA Certified Master Benchjeweler
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