Marshall Thermometers

• How can I recalibrate my thermometer? If you have a thermometer with external calibration option (standard on ADJ models) you can recalibrate the thermometer as follows:
  • Locate the 5/64 HEX set screw just under the head of the thermometer.
  • Loosen the HEX set screw 1/2 to 1 turn.
  • Immerse thermometer stem in minimum of two inches in an agitated liquid of known temperature for two to three minutes.
  • Hold thermometer head and stem. Slowly turn thermometer head until pointer is at the temperature desired.
  • Retighten HEX set screw.
  NOTE: For accurate setting of the thermometer use a very accurate thermometer to verify the temperature of your liquid medium used to calibrate the thermometer.
  
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• About Marshall Thermometers Marshall thermometers are designed for Industrial and Laboratory applications. We can fabricate to your specifications. A choice of Fahrenheit, Centigrade, and dual ranges are available in 1", 1 1/2", 2 1/4", 3" and 5" dial sizes with stem lengths from 2 1/2" to 84". For custom dials and special mountings - our Engineering Department is at your service.
  
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• Centigrade Ranges Available Download PDF document showing Centigrade/Celcius ranges available.

  Ranges Available (PDF)
  
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• Dual Ranges (F/C) Available Download PDF document showing dual F/C ranges available.

  Ranges Available (PDF)
  
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• Fahrenheit Ranges Available Download PDF document showing Fahrenheit ranges available.

  Ranges Available (PDF)
  
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• Shipment and Terms Marshall Instruments, Inc. offers immediate delivery. Terms are 30 days F.O.B. Anaheim, CA 92806.
  
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• Guarantee If there is evidence of defective materials or workmanship in any Marshall thermometer it will be repaired or replaced without charge. It must be sent, prepaid, to our factory within one year from date of shipment.
  
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• Corrosion Resistance Marshall thermometers are fabricated with type 303 and 304 stainless steel and are corrosion resistant to most acids and gases. All parts of the Marshall thermometer are protected from corrosion by nickel, plating or by use of silver solder. Many corrosive conditions can be overcome by coating the stem with plastic or by the use of separate sockets. It is necessary to state all particulars before recommendations can be made.
  
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• Accuracy Marshall thermometers are accurate to within one percent of the scale range and can be calibrated to your requirements. The over range protection is 50 percent up to 500 DEGF and 10 percent above 500 DEGF.
  
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• Dials Marshall thermometer pointers are non-magnetic and are designed to relative width of dial increments for fractional reading. Silicon damping is used to eliminate excessive vibration. The dial mountings prevent excessive heat transfer and eliminate discoloration. The dials are buffed, anodized and etched, with black enamel filled increments for easy reading.
  
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• Special Type Adaptations Our urn type thermometer is ideal for coffee and hot chocolate urns, roll warmers, steam tables and ovens. A sturdy aluminum handle added to a Model B thermometer with a spiked stem is ideal for testing soil, asphalt, and other penetrable materials.
  
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