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Tropic Marin Presents T.Marin Precision Thermometer for Inside Glass. Designed to Float Vertically in the Water, this Thermometer is Handmade and Accurate to 0.1 C/0.2 F. 
Tropic Marin Presents T.Marin Precision Hydrometer 11.5'. The Most Precise Instrument for Measuring Either the Density or the Specific Gravity. Handmade. Measuring Range from 1.018 Until 1.028. ...
"It was my first time ordering and it was quick and easy. My order came very fast..." Read All »
-Pam, Parkton MD
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