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Temperature Guns


Our Raytek® inventory is gone - that's it - we have sold every Raytek Noncontact Thermometer we had in stock! Although we no longer stock Raytek® we still recommend Raytek® Temperature Guns!



Do you need an affordable
Hi-Resolution Thermal Imager? Please click on
EZ Therm or the Thermal Image on the right for details!

EZ Therm Thermal Image


Raytek® Non Contact Thermometer Laser Sighting Guide

Understanding the Laser Sighting System on your Raytek® Thermometer is very important! The laser sighting capability is very different on the different models of Raytek® IR thermometers! The higher the price the better laser sighting distance and pattern – or in other words – you get what you pay for! Please call us at 704-233-9222 or send us an email if you have questions - thanks!


Sighting Type: Laser Point

Single point laser,
coaxial or offset

D:S = 6:1 on MT4

MT, KX, ST20

Advantages: Easy to see. Aims the unit at the center of the target’s IR energy spot.

Limitations: No indication of target size or measured area. User must calculate or look up the target size.

MT 4 D:S = 6:1 For example: at a 36" Distance you are actually measuring a 6" spot not the center of the laser dot!

Sighting Type: Laser Guide

Circular laser,
offset, cone beam

D:S = 50:1 on ST80

ST30, ST60, ST80

Advantages: Contains a large portion of the target energy within the circle while helping aim the unit using the center dot.

Limitations: Parallax, especially in the near field. Does not track the IR beam profile--apart from the focal point, the relationship of the IR circle to sighting is not constant.

ST80 D:S = 50:1 For example: at a 60" Distance you are actually measuring a 1.7" spot (per Raytek®)!

Sighting Type: True Spot

Circular laser,
coaxial, skew beam

D:S = 60:1 on MX


Advantages: Highlights approximately 90% of measured IR spot at all distances – sighting reflects the actual target size. Especially useful in the near field and for close-focus.

Limitations: Largest investment.

MX D:S = 60:1 For example: at a 32.8 ' Distance you are actually measuring a 11" spot (per Raytek®)!

Use the chart above as a starting point for choosing a type of laser sighting. Other important factors in choosing the type of sighting for your application include: target distance, the thermometer’s optical resolution, target size and cost. A final key element in evaluating sighting systems is the temperature relation of your targets to their background.

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