What do you think about an uncalibrated temp gauge? The only ones I recall seeing (mostly on Toyotas recently, but others in the
1970's) have at most 4 marks: two at the limits of the gauge, Cold and Hot (call this 0% and 100%, although the needle does move a bit farther than this), and two (inside the two above, maybe at 10% and 90%) that are presumably have some sort of resemblance to the temperature range that might be called "normal". No degrees anything is listed. Near the end of a "normal" drive, be it 10 miles or 50, it usually reads about 40%.Did they *ever* make a calibrated temp gauge for normal, consumer-type cars (as opposed to trucks, tanks, buses, etc.)? How about on a Ford Model T?