I need the method guys !
My tech did this really quick with a laser termometer.
He got the reading from the termostat cover where the tempreture sensor goes in. 175 F (80 C) was on his scale. Gouge showed 98 C. Since I dont have the laser termometer, I need an alternative method to duble check this.

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Dmitry
90' 300CE
17" Intra Signums
Brulen mufler
Euro Headlights/Clear Blinkers
White gouges (made my own)