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Tel-Tru 34100966 Model Gt300R Resettable Bi-Metal Process Grade Thermometer, Stainless Steel, 3' Dial, 1/2' NPT Back Conn, 0.250' Diameter x 9' Long 304Ss Stem, 200/1000°F, +/- 1% Full Span Accuracy

4.5 (3) Write Review
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$48.66

$ 25 .99 $25.99

In Stock

About this item

  • Commonly used in industrial, pulp and paper, food and beverage processing, HVAC, and OEM applications
  • Durable and reliable, with an all welded 303/304 stainless steel housing. Corrosion resistant to most chemicals. Hermetic seal, dustproof and leakproof IP65 & NEMA 4x
  • 90 degree Back angle, rear threaded connection design
  • Accuracy +/-1% full span per ASME B40.3 Grade A. The calibration reset is located on the side of the case benefiting the calibrator, and requiring an Allen wrench to discourage inadvertent tampering
  • Manufactured in USA, with an 8 year warranty


The Model GT300R is the best 3" dial back connected thermometer for heavy duty applications. The unique stem groove to identify the min. immersion for accurate reading. Glass window that is fully gasket.


Louie martinez
Reviewed in the United States on September 14, 2023
I love the unit I use it to melt lead
robert n hildebrand
Reviewed in the United States on August 23, 2023
What can be said - Made in USA, sturdy construction, easy to read, and accurate - what's not to like. Worth every penny. We use it in our Alfa One wood pizza oven. The thermometer that came with stopped working almost immediately. And it was hard to read.
Stephen Sanchez
Reviewed in the United States on November 18, 2015
Great high heat thermometer at a great price, definitely recommend.