View our Frequently Asked Questions.
Digital Thermometers
Tel-Tru’s Digital Thermometers are designed to deliver reliable accurate readings in the toughest industrial environments. All models are built to order using our wide range of configurations, delivering customers exactly what they need.
Dial Thermometers
Tel-Tru designs and manufactures industrial thermometers and other quality industrial temperature instruments to improve quality and operational performance.
RTD Sensors
Check-Set® Thermometer Calibrators
Check-Set Calibrator Data Logger for traceable digital record keeping.
Check-Set Calibrator for fast, easy, and accurate verification.
Remo-Tel®
The Remo-Tel Industrial Temperature Monitoring System automates temperature data logging and provides a 24/7 online monitoring dashboard for industrial and commercial operations to help mitigate risk for product loss and system failure and improve productivity. The Remo-Tel System is ideal for a wide variety of processes including Refrigeration, Molding, Brewing and other extremely time sensitive temperature monitoring applications.
Thermowells
Thermowells for sanitary applications as well as thermowells that can be treated and documented to NACE standards. Thermowells are recommended for pressure, corrosive fluid, or high velocity applications. Produced using highest quality material and machined from solid bar stock for standard or high velocity requirements in a large selection of materials and coatings. Designed and manufactured to assure perfect alignment with the thermometer stem.
Glass Industrial
Our glass industrial thermometers are versatile and adjust-angle, with a lens front and red liquid fill. They are NIST calibrated and guaranteed accurate to ± one scale division.
Pressure Instruments

Digital Thermometers
Tel-Tru’s Digital Thermometers are designed to deliver reliable accurate readings in the toughest industrial environments. All models are built to order using our wide range of configurations, delivering customers exactly what they need.
Dial Thermometers
Tel-Tru designs and manufactures industrial thermometers and other quality industrial temperature instruments to improve quality and operational performance.
RTD Sensors
Check-Set® Thermometer Calibrators
Check-Set Calibrator Data Logger for traceable digital record keeping.
Check-Set Calibrator for fast, easy, and accurate verification.
Remo-Tel®
The Remo-Tel Industrial Temperature Monitoring System automates temperature data logging and provides a 24/7 online monitoring dashboard for industrial and commercial operations to help mitigate risk for product loss and system failure and improve productivity. The Remo-Tel System is ideal for a wide variety of processes including Refrigeration, Molding, Brewing and other extremely time sensitive temperature monitoring applications.
Thermowells
Thermowells for sanitary applications as well as thermowells that can be treated and documented to NACE standards. Thermowells are recommended for pressure, corrosive fluid, or high velocity applications. Produced using highest quality material and machined from solid bar stock for standard or high velocity requirements in a large selection of materials and coatings. Designed and manufactured to assure perfect alignment with the thermometer stem.
Glass Industrial
Our glass industrial thermometers are versatile and adjust-angle, with a lens front and red liquid fill. They are NIST calibrated and guaranteed accurate to ± one scale division.
Pressure Instruments

$250.00
Annual factory re-certification and maintenance service includes thorough inspection/cleaning, testing, and NIST traceable calibration. Upon completion, the unit will be returned with a calibration certificate and labeled with the calibration service dates. Re-certification orders placed online WILL require credit card information, and also qualify for a $10 discount.
If you are uncertain of the manufacture date of your unit please contact us at customerservice@teltru.com or call our Customer Service team at 800-232-5335 during the following hours: Monday-Thursday 8am-5pm EST and Friday 8am-3:30pm EST.
Note: If there is an issue with a check-set that has been recertified and returned and we are notified within 15 business days of customer receipt of the device, the repair will be covered under warranty.
Annual factory re-certification and maintenance service includes thorough inspection/cleaning, testing, and NIST traceable calibration. Upon completion, the unit will be returned with a calibration certificate and labeled with the calibration service dates. Re-certification orders placed online WILL require credit card information, and also qualify for a $10 discount.
If you are uncertain of the manufacture date of your unit please contact us at customerservice@teltru.com or call our Customer Service team at 800-232-5335 during the following hours: Monday-Thursday 8am-5pm EST and Friday 8am-3:30pm EST.
Note: If there is an issue with a check-set that has been recertified and returned and we are notified within 15 business days of customer receipt of the device, the repair will be covered under warranty.
View our Frequently Asked Questions.
Our goal is 100% customer satisfaction. For warranty returns, a return authorization (RA) number is required.
For warranty information concerning a product purchased from Tel-Tru, please refer to Section 12, Warranty, of our Terms and Conditions policy.
If the product was purchased from a reseller, please contact them for the return authorization number.
If the product was purchased directly from Tel-Tru, please contact our customer service at 585.308.9904 / 800.232.3857 or info@teltru.com.