C T Johnson, Inc Charlotte, NC

Since 1984

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We are now a Distributor for a great instrument manufacturer

Palmer Instruments, Inc. America's first thermometer company originated in Cincinnati, OH in 1836. Since that time, Palmer Instruments has steadily evolved through product development  geared exclusively towards industrial supply and process measurement.

From development of  the "Foster Cup" thermometer in 1880, through the radical improvement of  thermometer legibility by the patented "Red Reading Mercury" tube in 1929, to  today's temperature and pressure measurement innovations, Palmer has always maintained the  "first" tradition by bringing instrument value, service and quality to a broad  range of industries.

Operating from a new facility in Asheville, NC since 1987, Palmer has  developed special-application products such as Dual-Sensing and "Slip-fit" thermometers, and pioneered new industry services such as free lifetime recalibration on pressure gauges. With the recent affiliation with Wahl Instruments, and resulting consolidation of manufacturing in Asheville, Palmer Instruments looks first to the future.

C. T. Johnson, Inc. is proud to be affilated with a firm that has been supplying quality instruments since 1880

Please shop with us at Shop.CTJohnson.net

Flue Gas Analyzers
Flue Gas Analysers


Soldering Iron Testers
Soldering Iron Testers


Pressure RecordersBimetal & Filled System ThermometersPressure gaugesIndustrial ThermometersThermal ImagersHand Held Infrared ThermometersDigi-Stem Digital TherometersRTD & TC Sensor Assemblies

 ThermowellsT150Temp-Plate Temperature Sensitive LabelsFixed Infrared PyrometersPressure TransducersHand Held Meters and ProbesBlack Body CalibratorsPressure Pumps

Wahl Instruments debuts SPY-CARE™ No Fault Thermal Imaging Warranty


Digi-Stem DST400® Thermometer
Model Number DST400®

Wahl's NEW! DST400 is the newest addition to Wahl's Digi-Stem® family of Digital Thermometers. They are wide range, high accuracy thermometers designed for many applications where accurate and reliable temperature monitoring is important.