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IM-179 Miniature Ratemeter |
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The IM-179/PD was “a miniature gamma ratemeter for placement in aircrew survival kits” that employed a Neher-White pressurized ion chamber filled with argon.. It only used two push button controls: read and test. The meter and dial are luminescent (Ra-226 radioluminescent paint) . The instructions on the case are self-explanatory. |
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Range: 0.02 to 200 R/hr on a single non-linear scale Size: 2.5” x 4.25” x 1.25” Weight: ca. 9 oz. Batteries: the commercial version of this instrument uses one 5.2 volt and one 1.34 volt Manufacturers: Victoreen Instrument Company,
Nuclear Corporation of
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Jordan (and Victoreen) sold a commercial version of this instrument known as the "Minirad." One obvious difference was that the Minirad didn't come with a color-coded scale. The Minirad came in three versions: the Model M-50 (0.005-50 R/hr), Model M-100 (0.01-100 R/hr) and the Model -200 (0.02-200 R/hr). References Defense Atomic Support Agency, List of Military and Civil Defense Radiac Devices. DASA 1243 revised, 1966. Defense Nuclear Agency List of Military and Civil Defense Radiac Devices HQDNA (AR) 3M Revised, August 1987. |
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