Gunson Gastester portable, 12V powered exhaust gas analyzer Review

Average Reviews:

(More customer reviews)I borrowed one of these from a friend many times, and then finally bought one last year. When following the user manual's instructions for proper use, this unit works GREAT! If you do NOT follow these instructions, you can get inconsistent or wrong readings.
I highly recommend the Gunson Gastester to those who can read, understand, and follow the user manual.

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