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About Us

Mid-State Instruments (MSI) is the leading thermal imaging distributor in the United States.

With over 30 years of technical experience, MSI provides customers with an easy and reliable solution for all infrared camera and gas detection needs. Our customers include the US Government, the military, and professionals in manufacturing, research and development and building and energy auditing. MSI contains one subdivision: Gas Detection Warehouse.

We are based in San Luis Obispo, CA. Our main address is:

3485 Sacramento Dr, Suite C
San Luis Obispo, CA 93401

Call us at (866) 451-2257 or fax us at (805) 576-7629.

Visit for all your gas detection needs!