Victoreen 450B low and high reading ion chamber **see test video**

Nice ion chamber unit with high versatility and high range of reading:

Radiation Detected: Alpha above 4 MeV; Beta above 100 keV; Gamma & X-ray above 7 keV
Operating Ranges: 0 to 5 mR/h (o to 50mSv/h)
0 to 50 mR/h (0 to 500mSv/h)
0 to 500 mR/h (0 to 5 mSv/h)
0 to 5 R/h (0 to 50 mSv/h)
O to 50 R/h (0 to 500 mSv/h)

Fully automatic ranging and zeroing modes.  Measures both exposure and exposure rate.  Uses 2, 9V batteries for operation.  With integrated backlight. 

This is the one to have- measures both low and high level radiation unlike most of the yellow civil defense ion chambers that would only be usable after a nuclear incident.  Offers significantly more range than a standard geiger counter or survey meter. 

This has been one of my back up instruments.  It isn't calibrated and working as shown in the video.  As with most electronics, sold as-is and final.  Any and all questions should be asked before purchase.  Test source is not included in this sale, only the meter. The manual is available on the web.  

Thanks for looking.