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This 12.7in (322mm) MA-420F ASTM 1F General Use Mercury Thermometer has a total measurement range from 0° to 302°F with graduations of 2.0°F. Immersion is 3in (76mm).
The MA-420FT Thermometer is the same, but comes with a NIST Traceable Certificate of Calibration.
MA-420F: 1.0lbs (0.45kg)
MA-420FT: 0.2lbs (0.09kg)
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