• Laser guided sighting system for easy targeting
  • 1% accuracy
  • 12-point data logging
  • Advanced optics to measure smaller targets at greater distances
  • Adjustable emissivity for more accurate temperature measurements
  • Selectable MAX, MIN, DIF and AVG functions that display values instantly with Hi/Lo Alarm
  • Temperatures up to 1100°F (600°C)


The handheld Fluke 66 infrared thermometer provides non-contact temperature measurement. Fluke 66 infrared thermometers determine an object's surface temperature by measuring the amount of infrared energy radiated by the object's surface.

The non-contact Fluke 66 infrared thermometer is the ideal professional diagnostic tool for HVAC technicians performing room balance checks, electricians evaluating electrical connections, and auto mechanics diagnosing catalytic converters. The portable Fluke 66 infrared thermometer enables professionals to research heating and ventilation problems, monitor the status of electrical motors and electrical panels, and diagnose car malfunctions with ease. Fluke 66 infrared thermometers measure surface temperatures, helping to quickly locate potential blockages or malfunctioning systems which reduces work time and improves performance.

The Fluke 66 infrared thermometer features a laser sighting system to guide measurements to the right target and to indicate the approximate center of the measurement area. With a distance to spot ratio of 30:1, use your non-contact Fluke 66 infrared thermometer within 15 feet (5 meters) of the intended target. At greater distances, the measured area will be larger (approximately the distance divided by 30).

Additional Features of the Fluke 66 Infrared Thermometer

  • Single-spot laser sighting
  • Durable, ergonomic construction
  • Tripod mount
  • Hard case and wrist strap
  • High and low alarm
  • Trigger Lock
  • Contact probe jack

Infrared Temperature Measurement - Technology Explained:

Infrared thermometers measure temperature from a distance by detecting the amount of thermal electromagnetic radiation emitted from the object being measured. This allows users to accurately measure surface temperatures in hazardous or hard-to-reach places, or other situations in which non-contact temperature measurement is desirable. Infrared thermometer technology is useful in a wide range of applications – including industrial, laboratory, food service, fire fighting, hobby, and home use.

While the technology is relatively simple, the myriad of names given to these devices can be confusing. "Laser Thermometers" makes reference to the laser that helps aim the thermometer. "IR Sensors" and "IR Thermometers" make use of a common abbreviation for "infrared". "Non-Contact Thermometers" is descriptive of the device's ability to measure temperature from a distance. "Radiation Pyrometers" is a scientific/technical term for these devices.