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The 101 (pn 2014) was a thermistor used with the long-retired CR21 Micrologger. It measured the -35° to +48°C range, with a ±0.5°C typical accuracy. Standard cable length was 10 feet. Historic radiation shield for attachment to a CM6 or CM10 tripod was the 41301 6-Plate Gill Radiation Shield (replaced by 41303).

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