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MA-645 Non-Mercury Glass Thermometer, 0°–230°F (Total Immersion) with 2° divisions is 12in (305mm) long and SAMA (Scientific Apparatus Makers Association) approved. The thermometer is filled with environmentally safe and non-hazardous blue-spirit liquid. This thermometer is calibrated for total immersion, serial numbered, and comes with a statement of accuracy. The single fixed scale is accurate to ±1 division below 105°C (221°F), ±1.5 division above 105°C (221°F), and ±2 divisions above 200°C (392°F).
MA-145 is identical, except that it is calibrated to 3in (76mm) partial immersion.
MA-145: Partial immersion
MA-645: Total immersion
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