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H-B Instrument™ Durac™ Bi-Metallic Dial Thermometers Products for Science Education

Features 1/2 in. NPT threaded connection and polycarbonate lens.

Manufacturer:  H-B Instrument™ B613108800

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Catalog No. S02691

This item has been discontinued and is no longer available. Please call customer service for assistance: 1-800-766-7000.



  • External adjustment allows for simple field calibration
  • For correct temperature reading, stem must be immersed at least 50mm in liquids and 100mm in gases
  • Each thermometer is individually packaged with a multi-language (English, French, German, Italian, Portuguese and Spanish) Statement of Test and Calibration

  • Part No 21596 features 3/8 in. NPT threaded connection which is ideal for industrial installations in tank or pipe lines
  • 1.7 in. dial size thermometers (except Part No 21596) do not have NPT threaded connections
  • They feature a beaker clip with built in recalibration adjustment tool



50 mm in liquids or 100 mm in gas
200°F to 1000°F
3 in.
3 in. dia. (7.6 cm)
Stainless Steel probe, multilanguage statement of test and calibration, 0.5 in. NPT threaded connection, beaker clip with built in adjustment tool
12 in.
305 mm
75 mm
Petrochemical, oil and gas, waste water, pharmaceutical, compost, food and beverage storage and processing, asphalt, mining, utilities, automotive, marine, photographic
12 in.
305 mm
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