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WIKA Bi-metal Thermometers, Models 20 and 33, are ideal for
most rugged industrial temperature measurement applications. The hermetically
sealed case offers protection from weather and dust. The bi-metal helix is
coated with a viscous silicone to minimize pointer oscillation and improve
temperature transmission.
Standard stem lengths up to 24" and custom lengths of up to 72" are
available with a 3" or 5" dial size.
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